Opinion
Curriculum Letter to the Editor

Delisle: Comments Underscore Differentiation’s Failings

January 28, 2015 1 min read
  • Save to favorites
  • Print

To the Editor:

When I wrote my Commentary “Differentiation Doesn’t Work” (Jan. 7, 2015), I anticipated that it would generate some discussion. Indeed, it has. In reading the comments made directly to Education Week on edweek.org, as well as the dozens of emails I have received from readers in several countries, I can conclude only one thing: Differentiation works … unless it doesn’t.

Many of those who disagreed with my premise touted their own successes with differentiation, while those who struggled with its implementation (mostly teachers) used terms like “overwhelmed” and “discouraged.”

Those opposed to my views called me “misinformed” or “naive,” while those who liked what I had to say applauded my “bravery” and “clarity” in stating the flaws of differentiation.

A good number of readers assumed that I wanted to return to the days of whole-class instruction (I don’t), and surprisingly few readers expressed concerns for how little gifted students benefit from differentiation in heterogeneous classrooms, which was a major point of my Commentary.

My favorite comment came from a reader who stated that differentiation, as a concept, is “sublimely beautiful,” while its implementation has been “ridiculous.” Amen to that.

I stand by my assertion that differentiation in a heterogeneous classroom setting is a difficult, at times impossible, task to complete for a single teacher.

If students were “strategically mixed” (as one reader put it) in classrooms instead of being placed haphazardly, without regard to their readiness to learn, then differentiation would have a chance at succeeding. However, until such time, differentiation will leave more students behind than it propels forward.

Editor’s note: The Commentary “Differentiation Doesn’t Work,” by James R. Delisle, provoked an avalanche of reader comments. Because of the extraordinary level of interest in the essay, Education Week is publishing this Commentary by one of differentiated instruction’s foremost proponents, Carol Ann Tomlinson.

James R. Delisle

Distinguished Professor of Education

Kent State University (Retired)

North Myrtle Beach, S.C.

A version of this article appeared in the January 29, 2015 edition of Education Week as Delisle: Comments Underscore Differentiation’s Failings

Events

This content is provided by our sponsor. It is not written by and does not necessarily reflect the views of Education Week's editorial staff.
Sponsor
Recruitment & Retention Webinar
Hiring, Retention, and Fill Rates: A Data-Driven Sub Strategy
Explore what keeps substitutes coming back and hear how one district rebuilt its substitute hiring process and improved its fill rate.
Content provided by Frontline Education
Early Childhood K-12 Essentials Forum Early Childhood Education: Building Essential Skills for Success
Join this free virtual event to examine the biggest challenges in supporting young children, from preschool through elementary school. 
This content is provided by our sponsor. It is not written by and does not necessarily reflect the views of Education Week's editorial staff.
Sponsor
Student Absenteeism Webinar
Attendance Isn't an Attendance Problem
Boost attendance by strengthening relationships, belonging, and support with practical strategies from Doug Fisher & Nancy Frey.
Content provided by Corwin

EdWeek Top School Jobs

Teacher Jobs
Search over ten thousand teaching jobs nationwide — elementary, middle, high school and more.
View Jobs
Principal Jobs
Find hundreds of jobs for principals, assistant principals, and other school leadership roles.
View Jobs
Administrator Jobs
Over a thousand district-level jobs: superintendents, directors, more.
View Jobs
Support Staff Jobs
Search thousands of jobs, from paraprofessionals to counselors and more.
View Jobs

Read Next

Curriculum Q&A Should State Boards Have More Oversight of Curricula?
A more active role would help schools select strong, research-based curricula, an expert argues.
5 min read
Conceptual image of gears drawn in flowing line art being tethered together and a lasso bounding box.
Laura Baker/Education Week + Getty
Curriculum Defense Dept. Schools Put New Emphasis on Western Civilization, Christianity
A new course is part of a wider reshaping of schools Defense Department-run for military families.
8 min read
A text book, shown Tuesday, Aug 11, 2026 in Washington, to be used by the Pentagon this fall when they will begin implementing a curriculum that centers on Western civilization and Christianity in the schools it operates for military families, part of an effort by Defense Secretary Pete Hegseth to redirect the education system toward patriotic values and classical learning.
A text book, shown Tuesday, Aug. 11, 2026 in Washington, to be used by the Pentagon this fall when it will begin implementing a curriculum that centers on Western civilization and Christianity in the schools it operates for military families, part of an effort by Defense Secretary Pete Hegseth to redirect the education system toward patriotic values and classical learning.
Associated Press
Curriculum High Costs Keep 12.6 Million Kids Out of Summer Programs, Report Finds
The Afterschool Alliance report recommends greater public and private funding of summer programs.
3 min read
Michelle Ayala, 18, plays with building blocks with campers at LASOS summer camp at Bel Air High School in Bel Air, Md., on July 24, 2025.
An 18-year-old plays with building blocks with campers at LASOS summer camp at Bel Air High School in Bel Air, Md., on July 24, 2025. High costs prevent nearly half of children whose parents want them in summer programs from attending.
KT Kanazawich/AP
Curriculum Q&A Leader Says EdReports Is 'Evolving' and Still Critical for Curriculum Review
Lewis Ferebee says EdReports has responded to criticisms and is a useful tool in a sea of curriculum choices.
5 min read
DC Public Schools Chancellor Lewis Ferebee speaks during a ribbon-cutting ceremony for a new addition at Raymond Elementary School on the first day of school, on Aug. 28, 2023, in Washington.
Lewis Ferebee, the then-chancellor of the District of Columbia public schools, during a ribbon-cutting ceremony at Raymond Elementary School on the first day of school, on Aug. 28, 2023, in Washington. Ferebee was announced as EdReports’ new chief executive officer in May.
Mark Schiefelbein/AP