This series shares what central office leaders need to know to build on the strengths of the traditional middle school model to rethink how schools can better support a new generation of young adolescents. Across seven articles, we share actionable, research-backed, system-level strategies school and district leaders can implement to strengthen core instruction, broaden opportunities for students, and use time and resources more strategically to boost learning and engagement over the long term.
Across the country, middle schools continue to face significant gaps in student learning. Many students enter sixth, seventh, or eighth grade without the foundational skills they need to successfully access grade-level work, particularly in math and literacy. Nationally, only 28% of 8th graders performed at or above the NAEP Proficient level in math last year, and only 29% did so in reading.
Yet providing meaningful intervention within the middle school day remains a challenge. In a recent Association for Middle Level Education (AMLE) survey, only 40% of middle school leaders said their school schedule facilitates time for intervention.
For students with and without disabilities who are behind, time matters. A few minutes of extra help here and there is unlikely to close a significant skill gap. Effective intervention requires dedicated time, targeted instruction, and teachers equipped to address the specific skills students need to develop.
Why Flex and WIN Blocks Often Fall Short
Many middle schools have added flex or WIN (“What I Need”) blocks to create time for additional academic support. These periods are relatively easy to fit within a traditional middle school schedule and can serve a variety of useful purposes.
But schools often struggle to use these blocks for high-quality intervention. The result is that students who are behind may receive additional help without the consistent, targeted instruction they need to close foundational skill gaps.
Why do flex and WIN blocks fall short of their aspirational purpose? What they offer in flexibility, they often lack in structure and clear expectations for how time should be used. Middle school students and teachers alike thrive on structure—that is why the schedule of nearly every school is segmented into defined periods with discrete subjects, standards, and objectives.
Flex blocks tend to work differently. Many revert to study halls in which teachers supervise groups of 20–25 students. Students, in theory, can visit their math teacher if they need help in math, but it is difficult for that teacher to provide meaningful intervention while also supervising a full classroom of other students. Other models assign students to their math teacher on Monday, science teacher on Tuesday, and so on. While this provides access to different teachers, it doesn't provide the depth or consistency needed for targeted intervention—and assumes that all students need help in all subjects.
Running a truly effective flex block is not impossible, but it is much harder (and often less effective) than running content-specific intervention classes for students who are struggling. In fact, comparing a middle school flex block to a best-practice content-specific intervention course is like comparing a gym membership to physical therapy: one offers general access, while the other addresses a precise need.
What Really Works to Help Middle Schoolers Catch Up
In our work with middle schools, three elements are especially important for making sure intervention is effective for students with and without disabilities: intervention needs enough time to make a difference, it needs to be taught by teachers with strong content knowledge, and it needs to be targeted to the precise skills students need to develop.
Give Intervention Enough Time
Students with significant unfinished learning need enough additional instructional time to make meaningful progress. A few 15-minute sessions each week—or occasional extra help during a flex block—will rarely provide the intensity needed to close substantial skill gaps.
Content-specific intervention courses provide a way to build that time directly into the school day. Students who need math intervention receive additional math instruction; students with foundational reading needs receive targeted literacy support. Intervention becomes a consistent part of the student's schedule rather than something that happens when time allows.
Make Sure Intervention is Taught by Content-Strong Teachers
Additional time only helps if students receive high-quality instruction during it. Intervention should be led by teachers who understand the content deeply and have the skills to diagnose and address the foundational gaps preventing students from accessing grade-level work.
This is especially important in middle school, where content becomes increasingly specialized. A student struggling with foundational math skills needs more than general academic support or time to finish assignments. They need a teacher who can identify misconceptions, provide explicit instruction, and help rebuild the skills necessary for success in grade-level math.
That has implications for staffing. When schools build intervention into the schedule, they should consider not only when intervention will happen and which students will receive it, but also who is best equipped to teach it.
Match Intervention to Precise Student Need
Effective intervention starts with knowing exactly what students need to learn.
Describing a student as “a year behind in math” may communicate the size of the challenge, but it does little to identify the instruction that student needs. A student who has not mastered dividing fractions may need very different support from a student struggling with proportional reasoning or foundational number sense.
Schools should use assessment data to identify specific skill gaps and group students around common needs. Those needs can then help determine the intervention students receive, how frequently they receive it, how students are grouped, and how many sections a school needs to offer.
As students master skills, their intervention should change with them. Regular progress monitoring allows schools to regroup students, adjust instruction, and move students out of intervention when they no longer need the additional support.
Together, these three elements turn intervention from a block of time on the schedule into a focused instructional strategy designed to help students catch up.
Balancing Intervention and Exploratory Choice
Making enough time for intervention can require a difficult tradeoff. For some students, additional math or literacy instruction may mean less time for electives or exploratory courses.
Schools should preserve access to those opportunities whenever possible. But protecting every elective at the expense of meaningful intervention can leave students without enough support to catch up. For some students, temporarily replacing an exploratory course with targeted intervention may be the best way to provide the time they need to make real progress.
As students build skills and no longer need that additional support, the goal should be to move them out of intervention and reopen opportunities for greater choice in their schedules.
A Place Where Students Can Experience Success
For students who have struggled academically for years, intervention can easily feel like one more reminder of what they cannot do, particularly if it takes the place of an elective or exploratory class they would rather be taking. That makes the intervention experience especially important.
Intervention should give students regular opportunities to see and feel their own progress. When instruction is targeted to the skills students actually need, they can begin mastering concepts that may have frustrated them for years. That success can build confidence and change how students see themselves as learners.
Making Intervention Non-Negotiable: A Transformative Shift for Achievement, and for Engagement
Middle school is an important window for addressing unfinished learning before students enter high school, where gaps can become even harder to overcome. Doing that well requires more than adding a flex period to the schedule.
School and district leaders will need to make high-impact intervention non-negotiable and take a systems approach to delivering it. They will need to give intervention enough time, staff it with content-strong teachers, and target instruction to students' specific needs. They also need to make thoughtful decisions about the tradeoffs required to create that time.
When intervention is designed this way, it can be transformative for schools and students alike. Schools that once struggled to support students with disabilities, multilingual learners, and students who arrived far below benchmark can see measurable, meaningful academic gains. Students build the skills and academic foundation they need to succeed in grade-level work. And as students begin to experience success in subjects where they have struggled, they often become more confident and engaged learners.
Other posts in this series:
PART I - Why It’s Time to Rethink the Traditional Middle School Model
PART II - Shift #1: Raise Achievement by Making Core Instruction Core to the Schedule
PART IV - Shift #3: Deepen Student Engagement Through Voice, Choice, and Meaningful Challenge
PART V - Shift #4: Boost Student Emotional Well-Being by Limiting Unstructured Time and Increasing Staff-Student Connections
PART VI - Shift #5: Operate Middle Schools More Cost-Effectively by Rethinking Teaming and Staffing
PART VII - Tools and Next Steps for Designing Middle Schools for a New Generation
About the Author
David James is a former teacher and middle school administrator who serves as an advisor to school and district leaders. He and his team have helped more than 100 middle schools across the nation better serve a new generation of students and educators. He is co-author of the book, It's Time for Strategic Scheduling: How to Design Smarter K-12 Schedules That Are Great for Students, Staff, and the Budget. He also leads the Secondary Scheduling Academy, an accelerated hands-on training program for school and district leadership teams to enhance capacity for strategic scheduling, build buy-in for changes, and design effective, best practice-aligned schedules that are better for students, teachers, and the budget.