Equip and inspire your teachers.
Propel your students forward.
NSSI transforms summer school learning from a missed opportunity into a strategic cornerstone and a key driver of student achievement and teacher development.
Partner with us to make gains that last!
Equip and inspire your teachers.
Propel your students forward.
NSSI transforms summer learning from a missed opportunity into a strategic cornerstone and a key driver of both student achievement and teacher development.
Partner with us to make gains that last!
Use Cases
Districts struggle with sluggish student gains and learning loss – coupled with persistent achievement gaps. Summer is a key pillar of their turnaround strategy.
NSSI’s turnkey solution comes with a curriculum, PD program and mentoring support that has proven to drive double-digit gains in Math and ELA.
Strong Tier 1 instruction drives achievement, but it’s tough to scale. Summer becomes an incubator of best practice, ensuring teachers return to fall classrooms ready to excel.
Summer curriculum materials are scripted – no planning required, coupled with best-in-class PD and experienced mentor teachers.
Planning a rigorous summer academic program that delivers results is like planning a second school year. Districts often require additional capacity to do this well.
NSSI spends all year thinking about summer - from our curriculum to our operational planning - so our district partners don’t have to.
From our blog
Summer School vs. Tutoring? What the Research Says
As K-12 school districts continue to invest in academic recovery, a central question is emerging: what actually drives achievement? That question shaped a recent LinkedIn live conversation following the recent release of CALDER research examining summer school programs across ten large districts serving nearly 450,000 students. It found that summer school consistently boosted math achievement, with gains equivalent to roughly two to three weeks of learning during the school year. Reading...
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Should You Build Or Buy Your Summer Program?
Summer school is no longer a “nice-to-have.” It’s a critical part of district strategy for accelerating learning, addressing instructional gaps, and re-engaging students who need additional support. That’s why we created a practical tool to help district and school leaders weigh the pros and cons based on your unique goals, staffing, and student needs.
Trusted by thousands of students, teachers, and families.
In 2025, NSSI partnered with 27 school districts across 13 states and DC to serve roughly 65,000 students.
This is the best PD I have had in the 14 years I have been teaching. NSSI is giving teachers a great way forward to streamline instruction and guide them to a successful lesson/classroom.
– Catherine L., School Leader
The scripted curriculum really set us up for success. It was clearly well-written and refined over time. It’s one of the best curriculums I’ve worked with!
– Michelle L., Teacher
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