Dylan Wiliam Profile
Dylan Wiliam

@dylanwiliam

Followers
129,756
Following
82
Media
559
Statuses
20,457

Teacher, researcher, writer, mostly interested in the power of education to transform lives and how to do it better.

Starke (FL)
Joined January 2009
Don't wanna be here? Send us removal request.
Explore trending content on Musk Viewer
@dylanwiliam
Dylan Wiliam
4 years
Research can't tell teachers what to do—classrooms are too complex for that ever to be likely. But research can identify "best bets" for improving practice, and the Great Teaching Toolkit Evidence Review is pretty much the state of the art in this regard:
Tweet media one
49
2K
4K
@dylanwiliam
Dylan Wiliam
8 years
Sometimes, a graph is so eloquent that commentary is superfluous:
Tweet media one
115
4K
4K
@dylanwiliam
Dylan Wiliam
5 years
Now this is very interesting, and I don't think at all obvious. Reading challenging texts aloud, and at a fast pace, improved the reading comprehension of all students, but for the lowest achievers, the gains were almost twice as great: .
104
1K
2K
@dylanwiliam
Dylan Wiliam
6 years
I have uploaded around 40 Powerpoint presentations that I have made for research studies I have read over the last couple of years, and they are available here under a Creative Commons Attribution (CC BY) license. I will add more when I get time.
85
952
2K
@dylanwiliam
Dylan Wiliam
6 years
328 studies over 50 years show that direct instruction (structured guidance for teachers, teaching discrete skills before application, daily checks on learning, regular testing for mastery) has consistent, large positive effects on student achievement: ($)
60
1K
2K
@dylanwiliam
Dylan Wiliam
5 years
A meta-analysis of 64 studies finds that self-explanation (e.g., asking students "Could you explain this to someone else") during instruction has a substantial impact on learning (g~0.55): ($)
38
1K
2K
@dylanwiliam
Dylan Wiliam
6 years
This may be the most important blog post I have read this year: "Your brain does not process information, retrieve knowledge or store memories. In short: your brain is not a computer."
56
974
2K
@dylanwiliam
Dylan Wiliam
2 years
A study of 355k UK primary school students finds reading achievement in one year predicts maths achievement the next year more strongly than the other way round suggesting "acquiring good reading skills is highly relevant for developing mathematics skills"
34
472
1K
@dylanwiliam
Dylan Wiliam
3 years
Just realized that I've never tweeted a link to the IES's 2007 Practice Guide on "Organizing instruction and study to improve student learning": . The checklist makes a much better placemat than most of the quick reference guides offered to teachers.
Tweet media one
25
458
1K
@dylanwiliam
Dylan Wiliam
5 years
A rare kind of study in education: a ten year follow-up of the long-term effects of Reading Recovery shows that the benefits are large, and the programme is highly-cost effective (£1 spent has a societal benefit of over £3): .
37
639
1K
@dylanwiliam
Dylan Wiliam
6 years
Why value-added is useless for measuring teacher quality: good teachers develop non-academic qualities that do not show up in that year's test scores but are crucial to longer-term success: (pdf)
23
668
1K
@dylanwiliam
Dylan Wiliam
5 years
A review of research on "flipped" classrooms finds that there is little evidence either way about impact on student achievement, and most studies are so poorly theorized that studies are difficult, if not impossible, to compare:
45
499
990
@dylanwiliam
Dylan Wiliam
4 years
I've just uploaded 3 short (~20 minute) videos on "Why we need to raise achievement", "What formative assessment is, and isn't", and "Teacher learning communities" to my YouTube channel: . As ever, they are available under a @creativecommons CC-BY license.
20
396
974
@dylanwiliam
Dylan Wiliam
5 years
The number of "conversational turns" parents have with children age 18 to 24 months is a stronger predictor of verbal comprehension and vocabulary 10 years later than total number of words spoken, even after controlling for socioeconomic status:
33
525
956
@dylanwiliam
Dylan Wiliam
9 months
Neuroscientist Reid Lyon offers 10 maxims about what we know about how children learn to read: . The research support for these claims is here: (pdf)
Tweet media one
17
387
961
@dylanwiliam
Dylan Wiliam
6 years
If you teach (anybody, anything) now is your chance to get your own copy of one of this century's most important psychology of education articles. And then, of course, you need to read it...
@tandfeducation
T&F Education Research
6 years
"Why Minimal Guidance During Instruction Does Not Work" by @P_A_Kirschner , John Sweller & Richard E. Clark is one of our top trending #education articles on @altmetric this year:
9
162
298
42
474
845
@dylanwiliam
Dylan Wiliam
5 years
Cross-sectional analyses of PISA and NAEP data suggest little or no overall relationship between technology use and student achievement: . We need to stop asking "Does technology help?" and start asking "When does technology help?"
64
335
815
@dylanwiliam
Dylan Wiliam
7 years
I've come to the conclusion Sweller's Cognitive Load Theory is the single most important thing for teachers to know
26
436
783
@dylanwiliam
Dylan Wiliam
4 years
If you are engaged in emergency remote teaching, you will not find a better use of 20 minutes of your time than this video presentation by @P_A_Kirschner recorded last week for @researchEdhome : . The following Q&A is also pretty good.
8
333
759
@dylanwiliam
Dylan Wiliam
6 years
A video of my presentation "Formative assessment: Confusions, clarifications, and prospects for consensus" at the Assessment in Education 25th anniversary conference in Oxford last month is now available here: (slides here: )
17
428
722
@dylanwiliam
Dylan Wiliam
3 years
For those who think assessment for learning and formative assessment are "old hat", 25 years after Paul Black and I published our first joint paper, I recorded a video for @aaiauk to explain why I think it's still important:
24
246
713
@dylanwiliam
Dylan Wiliam
4 years
Elsevier offered me $100 to write a 4,000 to 8,000 word chapter for their International Encyclopedia of Education. I offered to waive the honorarium if they would make my chapter open access. They declined. A month ago, I made a similar offer to @JohnCattEd . They accepted.
9
64
708
@dylanwiliam
Dylan Wiliam
4 years
I've uploaded videos of some talks to DropBox and you can access them here: . Over the coming weeks I will add more and relevant Powerpoint files. NB some of the talks are old, so I may not agree with what I said. Made available under a CC BY-NC license
25
241
695
@dylanwiliam
Dylan Wiliam
6 years
When Stockholm University introduced anonymous scoring of student work, scores of female students rose relative to those of male students, especially when their work was scored by male professors: (pdf)
18
412
671
@dylanwiliam
Dylan Wiliam
3 years
Wouldn't it be great if there was a place where you could get reliable advice about teaching, leadership, hiring, PD and so on? Well, now there is. The best of the Marshall Memo—18 years of weekly syntheses of the best thinking in education—is here, free:
14
190
629
@dylanwiliam
Dylan Wiliam
6 years
If you have a spare half-hour or so, you could read @pepsmccrea 's Memorable Teaching from cover to cover. I doubt you'll find an education book with more useful insights per minute of reading time:
41
200
621
@dylanwiliam
Dylan Wiliam
9 months
Arran Hamilton, John Hattie and I have just written a working paper on how #ArtificialInteligence is likely to change our world, and suggest 13 things we can do to minimize the damage: .
Tweet media one
29
256
591
@dylanwiliam
Dylan Wiliam
6 years
Students taught math by highly qualified teachers learn more: . However, the effect is small. One standard deviation of teacher subject expertise increases student learning by two weeks per year. Subject expertise is only a small part of teacher quality
28
299
584
@dylanwiliam
Dylan Wiliam
4 years
A depressing number of commentators on today’s PISA results talk about countries’ ranks rather than how well they did. Ranks are a really bad metric for seeing what is going on, and are even worse for looking at trends over time as the countries participating in PISA change.
23
198
580
@dylanwiliam
Dylan Wiliam
5 years
I re-tweeted this (HT @greg_ashman ) last week, but it's so important I am sending it round again. Sweller, van Merriënboer and Pass provide an open-access guide to cognitive load theory: its history, the state-of-the-art, and future directions:
13
298
573
@dylanwiliam
Dylan Wiliam
6 years
You may recall me tweeting that the only thing that matters with feedback is what students do with it. Now here's some advice from an @AceThatTest guest blog on helping students use feedback better:
3
323
543
@dylanwiliam
Dylan Wiliam
4 years
A meta-analysis of 56 studies found that writing about content material improved student achievement in math, science, and social studies, with similar gains in each subject, and similar gains for elementary, middle and high school students: ($)
12
261
533
@dylanwiliam
Dylan Wiliam
6 years
Here's why I didn't call formative assessment responsive teaching:
Tweet media one
Tweet media two
13
314
523
@dylanwiliam
Dylan Wiliam
6 years
@matthaig1 @C_Hendrick Or as Frank McCourt once said, when asked "Why do we have to read this?" by one of his students: “You will read it for the same reason your parents waste their money on your piano lessons. So you won’t be a boring little shite the rest of your life.”
7
167
514
@dylanwiliam
Dylan Wiliam
4 years
@SteveStuWill @mungowitz Or, as Douglas Adams might have put it, a beluga whale performing a fiendishly clever experiment on a human...
7
10
492
@dylanwiliam
Dylan Wiliam
4 years
I have now uploaded more formative assessment videos to YouTube: . The first 3 videos that look like the picture below give an overview, and the other 6 go into more detail, including discussion questions for teachers. Details here:
Tweet media one
9
275
514
@dylanwiliam
Dylan Wiliam
4 years
My chapter on "How to think about assessment" in @s_donarski 's @researchED1 Guide to Assessment published by @JohnCattEd can be downloaded free from here: . The rest of the book you'll have to buy...
15
196
507
@dylanwiliam
Dylan Wiliam
5 years
Here's an idea. Let's spend £10m to recruit PhDs and other professionals into teaching but let's not spend any money on evaluating their success, just in case they turn out to be no better than other teachers: — #doomedtosucceed
43
191
494
@dylanwiliam
Dylan Wiliam
6 years
Having an outstanding (2sd>µ) teacher in Reception improves a child's achievement ten years later at GCSE by one-third of a grade per subject:
26
361
484
@dylanwiliam
Dylan Wiliam
2 years
Can't remember if I already tweeted this, but actually, it's so good that even if I did, it's worth retweeting. Here's @rpondiscio on "five damaging educational myths" that we should not allow to go unchallenged:
10
197
478
@dylanwiliam
Dylan Wiliam
6 years
Slides from today's presentation at the Assessment in Education 25th Anniversary conference in Oxford—"Formative assessment: Confusions, clarifications, & prospects for consensus"—available here:
8
265
474
@dylanwiliam
Dylan Wiliam
6 years
This is important. In 1999, "How people learn" provided an authoritative survey of research on learning. The latest edition adds research on neurological processes, individual and cultural variability, sociocultural factors and the role of technology:
10
223
470
@dylanwiliam
Dylan Wiliam
8 months
This is @claudeai01 's first attempt at summarizing Paul Black's and my 1998 paper "Assessment and classroom learning"—pretty impressive in my view.
Tweet media one
11
153
472
@dylanwiliam
Dylan Wiliam
11 months
Issue 18 of @CharteredColl 's Impact magazine is out, which means, I think, that I can share the article I wrote for issue 17. It's called "Teacher quality - What it is, why it matters, and how to get more of it" and you can download it from here: (pdf)
12
162
470
@dylanwiliam
Dylan Wiliam
5 years
A slow-motion train-wreck: In England, the rate at which teachers are retained in government-funded schools has declined in each of the last seven years:
Tweet media one
42
563
451
@dylanwiliam
Dylan Wiliam
5 years
Increased use of student-centered teaching methods is linked to increased student wellbeing but lower achievement, which in turn, link to increased adult life satisfaction, but lower earnings—the "achievement-wellbeing tradeoff", discussed by @CfEdnEcon :
36
255
458
@dylanwiliam
Dylan Wiliam
6 years
The UK's @EducEndowFoundn publishes a useful practice guide for teachers on metacognition and self-regulated learning:
5
321
457
@dylanwiliam
Dylan Wiliam
4 years
I've also added to my YouTube channel six short videos (15-20 mins each) originally prepared for South Australia. The idea is that each video provides some input, and a discussion question, that could be used for an hour's professional development:
6
194
454
@dylanwiliam
Dylan Wiliam
5 years
@oldandrewuk I've said it before (e.g. in Hendrick & McPherson's "What does this look like in the classroom") but I'll say it again. Any school leader who says it is a good idea for teachers to mark everything their students do needs to think about what else could be done with that time.
8
147
439
@dylanwiliam
Dylan Wiliam
4 years
I've written a short article about the difference between assessment for learning and formative assessment: . If you read English, there's probably nothing new for you here, but it is available in 22 other languages, so there is that...
10
216
446
@dylanwiliam
Dylan Wiliam
5 years
This is truly disturbing...
@effortfuleduktr
Blake Harvard
5 years
10 misunderstandings of how we learn. Look at those percentages...yikes. From Understanding How We Learn by ⁦ @doctorwhy ⁩ ⁦ @DrSumeracki ⁩ ⁦ @olicav
Tweet media one
40
356
495
28
340
436
@dylanwiliam
Dylan Wiliam
11 months
Got my copies today. You can get yours here:
Tweet media one
21
60
436
@dylanwiliam
Dylan Wiliam
2 years
Why do so many teachers still believe that learning styles exist, and that adapting instruction to mesh with a student's preferred learning style will be helpful? @erikofgang gets some useful insights from @DTWillingham :
26
193
428
@dylanwiliam
Dylan Wiliam
7 years
Watch me trying to explain Cognitive Load Theory in 5 minutes/20 slides at 2017's Wisconsin Math Council conference:
12
199
419
@dylanwiliam
Dylan Wiliam
5 years
In the future, STEM skills may be less useful without "non cognitive" skills such as listening, problem-solving, teamwork, integrity, and dependability:
19
243
426
@dylanwiliam
Dylan Wiliam
6 years
I particularly like the fact that this includes both descriptions of quality and examples of quality, so students can see what the success criteria mean in context.
@grant_mark
Mark Grant
6 years
@dylanwiliam after 2 years of leading embedding formative assessment strategies, I walked into a colleague’s learning space to see this. It was fantastic to see how encouraging educators to teach students to be evaluators of their own success and set personal goals being realised
Tweet media one
2
58
139
4
161
418
@dylanwiliam
Dylan Wiliam
4 years
Over 6 years, Developing Quality in Mathematics Education—an EU funded project—produced 4650 engaging maths activities that have been trialled with students in 11 countries (and 10 languages). Provided you register with DQME, you can get them all free here
17
205
415
@dylanwiliam
Dylan Wiliam
6 years
If you teach physics to 11 to 18 year olds then you absolutely need to get hold of a copy of Ben Rogers' superb new book "The big ideas in physics and how to teach them": . And that's not just my opinion. John Sweller describes it as "brilliant". Nuff said.
19
215
410
@dylanwiliam
Dylan Wiliam
4 years
Slides from my presentation at #rEDPhil19 yesterday ("How is research supposed to improve education?") now posted here:
19
168
408
@dylanwiliam
Dylan Wiliam
4 months
Excellent article from @DTWillingham on teaching reading comprehension, and in particular, why teaching reading comprehension strategies is useful, but not enough:
3
170
412
@dylanwiliam
Dylan Wiliam
3 years
@Miss_Snuffy A real problem with a lot of writing on creativity is that it ignores the second part of the standard defintion: having novel ideas that have value. Blowing through the wrong end of a trumpet is not creative; Miles Davis is. Creativity almost always requires disciplinary mastery
22
97
400
@dylanwiliam
Dylan Wiliam
5 years
Just got hold of @researchED1 's Guide to Direct Instruction edited by @adamboxer1 . It is truly excellent. Though written by UK teachers, the book is accessible to teachers world-wide. If you want to know more about DI (and you should), you need this book:
14
134
400
@dylanwiliam
Dylan Wiliam
6 years
What's the alternative to generic cross-curricular "themes" in the curriculum? Multi-disciplinary tasks in which the specific ways in which different disciplines create knowledge are honoured and developed (from Oliver Knight):
10
201
391
@dylanwiliam
Dylan Wiliam
3 years
@MissSDoherty The thing that gets me is why people assume that teachers need to work on their weaknesses. In many cases, becoming outstanding at the things you’re already good at may benefit students more. For me, aim of PD is not to make every teacher into a clone of every other teacher…
18
92
396
@dylanwiliam
Dylan Wiliam
7 years
I am digitizing my archive of National Curriculum documents from the 1980s and 1990s and you can find them here:
14
211
389
@dylanwiliam
Dylan Wiliam
6 years
Rather awkwardly for the British government, @sgorard and Nadia Siddiqui find that grammar (i.e. selective) schools in England increase social stratification but do not increase achievement: . Oh well; never let the facts spoil a good theory...
8
355
385
@dylanwiliam
Dylan Wiliam
6 months
How much of what are termed "restorative" behaviour practices in schools begin with an absolute requirement that those causing harm to others acknowledge that harm? Asking for a friend.
57
42
395
@dylanwiliam
Dylan Wiliam
4 years
Slides from my keynote—"Curriculum, pedagogy and assessment, in that order"—at ASCL's 2020 conference at the International Convention Centre, Birmingham, are now available here:
11
141
391
@dylanwiliam
Dylan Wiliam
11 months
My commentary on a special issue of Learning and Instruction—"Putting learners at the heart of the feedback process"—is available free here for 50 days:
12
141
386
@dylanwiliam
Dylan Wiliam
5 years
"Should teachers know the basic science of how children learn?" A typically thoughtful and helpful answer to the question from @DTWillingham in the AFT's "American Educator" magazine: (spoiler alert: the answer is "Yes, but...")
8
172
379
@dylanwiliam
Dylan Wiliam
3 months
"Handwriting but not typewriting leads to widespread brain connectivity" perhaps because handwriting adds desirable difficulties to the task of writing (although participants had to type with just one finger):
23
137
372
@dylanwiliam
Dylan Wiliam
4 years
A systematic review of 21 studies finds that differentiation can increase achievement under certain circumstances, while within- and between-class grouping has a negative impact on lower-achievers, and no significant effects either way on others: ($)
12
222
368
@dylanwiliam
Dylan Wiliam
4 years
The @EducEndowFoundn has just added a detailed review of research by @ProfDanielMuijs and @cbokhove to the guidance on metacognition and self-regulated learning that it published two years ago:
5
193
359
@dylanwiliam
Dylan Wiliam
6 years
When people work in groups, average performance increases, but the quality of the best solution tends to decrease. Making collaboration intermittent seems to reduce the decline in the quality of the best solution produced by members of the group:
6
237
353
@dylanwiliam
Dylan Wiliam
6 years
This is why I keep on pointing out that the main purpose of feedback is to improve the student and not the work...
@DavidDidau
David Didau
6 years
Did Austin Actually Learn Anything from his Butterfly? via @Adam___Porter
17
74
102
8
177
349
@dylanwiliam
Dylan Wiliam
11 years
For those who ask me why I think learning styles are a waste of time, here's the evidence that convinced me: http://t.co/5PIyAG2rST (pdf)
25
291
349
@dylanwiliam
Dylan Wiliam
4 years
@C_Hendrick @HealJim Here's a slide that I have been playing around with over the last few months...
Tweet media one
10
124
352
@dylanwiliam
Dylan Wiliam
9 months
@RogersHistory When I taught full time, I taught to the very last lesson not out of virtue, but out of laziness—keeping control of a class was simply easier when the students were doing what they had done all year...
20
7
352
@dylanwiliam
Dylan Wiliam
6 years
3rd, 4th and 5th graders in North Carolina made more progress if they were taught by the same teacher for a second year, and the benefits were greater for minority students, and those taught by less effective teachers: ($)
17
191
342
@dylanwiliam
Dylan Wiliam
5 years
A new 38-minute @EducEndowFoundn podcast looks at the "Embedding formative assessment" programme that @siobhanleahy50 and I developed, and which an @NIESRorg evaluation published last year showed had a significant impact on student achievement:
8
181
343
@dylanwiliam
Dylan Wiliam
6 years
@wizard5563 I don't think teachers should be trying to keep up with the latest research. There's too much of it, and many apparently exciting findings do not replicate. I would look for research syntheses (eg "Make it stick") and blogs by teachers who are trying to put research into practice
18
126
344
@dylanwiliam
Dylan Wiliam
3 years
"Growth mindset intervention delivered by teachers boosts achievement in early adolescence" particuarly for lower-achieving students: . Important, since many earlier studies have shown that teacher-delivered interventions were unsuccessful.
5
117
345
@dylanwiliam
Dylan Wiliam
7 years
Now this I like...
@MrRooBKK
Roo Stenning
7 years
Tweet media one
13
96
187
9
208
338
@dylanwiliam
Dylan Wiliam
2 years
@adamboxer1 You know, expertise in the profession might actually be accumulating. I can’t think of anything more positive for the future of education than the idea that each generation of teachers is better prepared than the previous one.
13
37
339
@dylanwiliam
Dylan Wiliam
1 year
Slides from my presentation this morning on collaborative and cooperative learning at the @learningandtheb conference on "Teaching Social Brains" in New York are here: .
7
90
339
@dylanwiliam
Dylan Wiliam
1 year
I may have to reconsider my skepticism about the benefits of paying good teachers more. In Dallas, TX, paying good teachers more to work in low-achieving schools produced immediate improvements that disappeared when the incentives stopped:
30
108
340
@dylanwiliam
Dylan Wiliam
7 years
Maybe not surprising to most but some still don't believe it. Spending more on pre/school helps poor children—a lot:
9
261
334
@dylanwiliam
Dylan Wiliam
7 years
Probably the easiest way to screw up an education system: Make teacher pay uncompetitive with comparable graduates:
13
372
331
@dylanwiliam
Dylan Wiliam
5 years
Teaching US middle-schoolers that feelings of anxiety and lack of belonging are common, short-lived, and due to external, temporary causes, improved attendance, behavior and academic achievement:
10
141
333
@dylanwiliam
Dylan Wiliam
6 years
Just sent returned the final proofs of my next book to the publisher. It will be out in April, here:
Tweet media one
18
98
328
@dylanwiliam
Dylan Wiliam
4 years
I've uploaded the video and Powerpoint file for my talk on "Teacher quality" at Durrington School's @researchEDDHS event to a DropBox folder here: . As ever it's available under a @creativecommons Attribution-NonCommercial (CC BY-NC) license
11
118
330
@dylanwiliam
Dylan Wiliam
3 years
Didn't see this being shouted from the rooftops last week: The US leads the world in the ability of its students to distinguish fact from opinion: . Even more interesting, Finland, which claims to do this well, is pretty average...
Tweet media one
28
130
323
@dylanwiliam
Dylan Wiliam
3 years
@MsJasmineMN I think the idea that we should plan lessons rather than learning is responsible for quite a lot of sub-optimal practice.
5
77
324
@dylanwiliam
Dylan Wiliam
4 years
Just been re-reading Lant Pritchett's excellent "The rebirth of education" (HT Kim Marshall for reminding me about it). "There is no successful educational system anywhere, of any kind, that attained excellence by being hostile to teachers." (Kindle location 2274)
7
113
323
@dylanwiliam
Dylan Wiliam
6 years
Schools are not like other workplaces: "the types of [Human Resource Management] practices that improve school performance are different from those that improve performance elsewhere in the economy."
12
156
314
@dylanwiliam
Dylan Wiliam
1 year
@primarypercival As my friend @rpondiscio points out, we need teaching to be a job that ordinary humans can do. In my view any system in which teaching can only be done well by those with extraordinary ability and charisma is a system that will be failing its youth.
10
71
322
@dylanwiliam
Dylan Wiliam
6 years
@Everateacher @primarypercival As E.D. Hirsch points out, skill is content, and content is skill. The so called "21st century skills" like "creativity" aren't really skills. They are collections of skills that are specific to a discipline, and require massive amounts of content knowledge.
21
180
311
@dylanwiliam
Dylan Wiliam
2 years
This really is amazing...
@SteveStuWill
Steve Stewart-Williams
2 years
One of my all-time favourites. Stare at the red dot on the woman's nose for 30 seconds, then look at an empty wall while blinking quickly. Promise it's worth it...
Tweet media one
633
3K
20K
14
57
307