Marshall Memo 1110
A Weekly Round-up of Important Ideas and Research in K-12 Education
October 27, 2025
1. Toward reliable “Consumer Reports” for curriculum materials
2. How to disagree constructively
3. When to use AI and when humans must do the work
4. Building Thinking Classrooms – the research base
5. Timothy Shanahan on using grade-level texts
6. Using multi-classroom observations to spark collective efficacy
7. How do single-sex schools affect students’ future attitudes?
“The simplest way to signal curiosity is just to say you are curious.”
Julia Minson, Hanne Collins, and Michael Yeomans (see item #2)
“Researchers have found that gaps in knowledge in STEM-related areas emerge as early as kindergarten, and these gaps continue to widen as students progress to later elementary grades and beyond.”
Nicole Fenty, Neyli Nouraei Yeganeh, and Vanessa Uhteg in “Sequencing Nursery
Rhymes Through Early Coding in Preschool Settings” in The Reading Teacher,
November/December 2025 (Vol. 79, #3, pp. 1-35)
“You can get through fifth-grade math without fact fluency, but it’s like riding a bike with a rusty chain or flat tire. It’s a grind.”
Mike Kenny in “Vermont Teacher Turns School Project Into Successful Math App”
by Alison Novak in Seven Days, October 21, 2025
“Forcing students not planning a STEM career to take calculus because it’s the only rigorous math option may discourage and frustrate them, while a different math course such as statistics might better prepare them for high-earning careers in other fields that better align with their interests.”
Adam Tyner in “Rethinking Advanced Math in High School” in Education Gadfly,
October 23, 2025
“Phonics is essential to helping kids learn to read, but overemphasis on decoding short, uninteresting texts may put children off reading… Faced with competition from social media and the instant gratification of short videos, allocating hours to reading a good book is a difficult sell, so we have to look at what interests young readers – song lyrics, spoken word, poetry, movie and play scripts, sports stories, and even comics – so that they have the opportunity to expand their understanding of the world and people they are yet to meet through the joy of reading.”
Daniel Ward in “Pleased to Read” in Language Magazine, Oct. 2025 (Vol. 25, #2, p. 4)
“I don’t think we pay enough attention to what it is that makes a particular text hard to understand.”
Timothy Shanahan, quoted in “These Teachers Have Their Students Read Multiple
Novels a Year. How They Do It” by Sarah Schwartz in Education Week, Oct. 21, 2025
In this Education Gadfly article, journalist Holly Korbey traces the history of EdReports, which was originally launched to help states and districts see how well curriculum products were aligned with Common Core State Standards. Now, says Korbey, “EdReports has become the de facto authority for many states in either choosing curricula or helping create lists of approved materials that districts are allowed to choose from. A ‘green light’ from EdReports means to people who make decisions that those reading, math, or science materials are going to be ‘high quality.’”
But how reliable are EdReports assessments? Early in its history, reviews were written by groups of well-trained educators, but critics say that a number of problems are leading to uneven quality:
In this Harvard Business Review article, Julia Minson (Harvard Kennedy School of Government), Hanne Collins (UCLA Anderson School of Management), and Michael Yeomans (Imperial College London) say that when people disagree, there can be important benefits: sparking creativity, preventing costly errors, and better decisions. But if disagreements are not handled well, they can escalate into a “competitive spiral” and cause major interpersonal and institutional problems.
The usual advice for preventing escalation is to think and feel about your counterpart and act in specific ways:
In this Harvard Business Review article, Bharat Anand (NYU Stern School) and Andy Wu (Harvard Business School and Penn Wharton School) have three observations on GenAI:
In her latest Coaching Letter, Connecticut author/consultant Isobel Stevenson says Peter Liljedahl’s Building Thinking Classrooms approach aligns with several strands of educational research. “The smart thing about BTC,” she says, “is in pulling those strands together and making them usable for teachers in a way that I don’t think anything else has, at least in math – and now of course the influence is spilling over to other content areas.” Here’s her list of research-based components:
• Task predicts performance – In a Building Thinking Classrooms lesson, the task student groups tackle (at their stand-up whiteboards) is designed to carry math ideas. This echoes Doyle (1983) on academic work and Smith and Stein (1998) on selecting and implementing high-level tasks.
• Random grouping – Horn (2010) and others have written about how groupings affect classroom dynamics and student participation. “Random groupings,” says Stevenson, “interrupt the familiar hierarchies that form when students know who’s ‘good at math’ and who isn’t.” Liljedahl has been an outspoken proponent of heterogeneous grouping so that hierarchies of performance aren’t cemented over time.
• Maintaining cognitive demand – A central practice of Building Thinking Classrooms is to start with a meaty, low-floor-high-ceiling problem and then hold and augment that level of demand as students work. Stevenson cites Smith and Stein (1998) and their Mathematical Tasks Framework on how cognitive demand often erodes during instruction. The goal in a BTC lesson is “flow” as described by Mihaly Csikszentmihalyi.
• Formative assessment and in-the-moment responses – The heavy lifting of good teaching is teachers checking for understanding, responding to student questions, and making good decisions on which ideas to pursue. Stevenson cites the work of Ball, Thames, and Phelps (2008), Nuthall (2007), and Wiliam and Black (1998). In a BTC classroom, the teacher circulates, listens carefully, and decides when to suggest, give hints, ask questions, or smile and walk away.
• Whole-class discussion and consolidation – “A common misconception is that BTC sidelines teacher talk,” says Stevenson. “In reality, teacher talk is abundant – including some direct explanation – but it happens at consolidation, when the class comes back together to make sense of their work.” She cites Jackson, Garrison, Wilson, Gibbons, and Shahan (2013) on all-class discussions being where students’ opportunities to learn are shaped. Liljedahl’s approach is to not front-load explanations but wait until students have wrestled with concepts and skills and then consolidate learning in discussion and direct instruction in the last one-third of the lesson.
• Belonging and expectations – “It’s not enough for teachers to believe they have high expectations,” says Stevenson; “what matters is whether students experience those expectations as real and directed toward them. BTC structures – random grouping, visible thinking, public consolidation – are as much about cultivating belonging and shared responsibility as they are about math content.” She cites Cohen, Steele, and Ross (1999), Ferguson (2003), and Walton and Cohen (2011).
Stevenson sums up her belief in the efficacy of Building Thinking Classrooms: “It is a very clever, elegant, and practical packaging of what is, in fact, some very old research… We see it working all the time, and frequently it is most obviously working well for the students whom teachers see as less capable.”
“Coaching Letter #221” by Isobel Stevenson, October 21, 2025; Stevenson can be reached at [email protected].
“Don’t Confuse Reading Comprehension and Learning to Read (and to Reread)” by Timothy Shanahan in Shanahan on Literacy, October 25, 2025; Shanahan’s new book is Leveled Reading, Leveled Lives (Harvard Education Press, 2025); he is at [email protected].
In this article in Edutopia, consultant Olivia Odileke says checklist-driven evaluations of teachers rarely improve instruction. Teachers subjected to this process are often defensive, says Odileke, “implement surface-level compliance changes or feel singled out for improvement.” Traditional teacher evaluations also fail to address instructional problems that exist across classrooms and would benefit from collective action.
Odileke saw this most clearly when she accompanied a principal observing several third-grade classrooms. The principal checked boxes for each teacher on posted learning objectives, whether students were on task, questioning strategies, and status with the pacing guide. But when the principal was preparing for the third-grade PLC meeting that afternoon, she realized that she had data but no insights about the grade as a whole. She wasn’t in a position to get the third-grade team invested in making needed improvements across classrooms.
To orchestrate that kind of collective work, Odileke believes principals should make 15-minute visits to all of a grade level’s classes when teachers are working on similar content, focusing on one schoolwide priority – perhaps student engagement, questioning strategies, or differentiation. And principals should ask teachers up front what to look for in that area, making them partners in the process.
Then, when meeting with the grade-level team, the principal asks questions that get teachers thinking about effective practices, versus calling out individual deficits, for example:
“Using Your PLCs to Promote Collective Instructional Improvement” by Olivia Odileke in Edutopia, October 16, 2025
“Feeling comfortable interacting with someone of another gender and having competence in cross-gender relationships are important for adolescents’ and young adults’ psychosocial development,” say Wang Ivy Wong (Chinese University of Hong Kong) and five colleagues in this article in Journal of School Psychology. Wong et al. report on their study comparing Hong Kong students attending single-sex high schools with students who attended coeducational schools. The researchers surveyed students in their senior year in high school and then 18 months after graduation.
The results: students who attended single-sex high schools reported lower other-gender relationship efficacy than their coeducation-attending peers. However, for both groups, mixed-gender anxiety increased over time, at about the same levels. “The study suggests potentially negative effects of same-sex schooling on mixed-gender interpersonal outcomes,” conclude the authors. “These findings call for attention to the social-relational needs and challenges faced by high-school students. They also call for the need for continual intervention programs to fortify students for successful mixed-gender interactions and confidence, such as providing opportunities to learn peer norms and expectations in diverse peer groups, breaking down biased gender perceptions, and organizing more activities involving multiple schools. These interventions may be beneficial, particularly for students in single-sex schools.”
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About the Marshall Memo
Mission and focus:
This weekly memo is designed to keep principals, teachers, superintendents, and other educators very well-informed on current research and effective practices in K-12 education. Kim Marshall, drawing on 54 years’ experience as a teacher, principal, central office administrator, writer, and consultant lightens the load of busy educators by serving as their “designated reader.”
To produce the Marshall Memo, Kim subscribes to 60 carefully-chosen publications (see list to the right), sifts through more than a hundred articles each week, and selects 5-10 that have the greatest potential to improve teaching, leadership, and learning. He then writes a brief summary of each article, pulls out several striking quotes, provides e-links to full articles when available, and e-mails the Memo to subscribers early Tuesday (there are 50 issues a year). Every week there’s a podcast and HTML version. Artificial intelligence is not used.
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Core list of publications covered
Those read this week are underlined.
All Things PLC
American Educational Research Journal
American Educator
American Journal of Education
AMLE Magazine
ASCA School Counselor
ASCD SmartBrief
Cult of Pedagogy
District Management Journal
Ed Magazine
Educational Evaluation and Policy Analysis
Educational Horizons
Educational Leadership
Elementary School Journal
English Journal
Exceptional Children
Harvard Business Review
Harvard Educational Review
Independent School
Journal of Adolescent and Adult Literacy
Journal of Education for Students Placed At Risk (JESPAR)
Kappa Delta Pi Record
Kappan (Phi Delta Kappan)
Knowledge Quest
Language Arts
Language Magazine
Learning for Justice (formerly Teaching Tolerance)
Literacy Today (formerly Reading Today)
Mathematics Teacher: Learning & Teaching PK-12
Middle School Journal
Peabody Journal of Education
Principal
Principal Leadership
Psychology Today
Reading Research Quarterly
Rethinking Schools
Review of Educational Research
School Administrator
School Library Journal
Social Education
Social Studies and the Young Learner
Teaching Exceptional Children
The Atlantic
The Chronicle of Higher Education
The Journal of the Learning Sciences
The Language Educator
The Learning Professional (formerly Journal of Staff Development)
The Reading Teacher
Theory Into Practice
Time
Urban Education