The Charter Network That Beat the Odds - and the Rankings

In August 2006, a former New York City councilmember opened a small school in Harlem with roughly 165 children and one blunt idea: give kids from low-income families the kind of education that wealthy families buy without thinking about it. Twenty years on, that single school has become Success Academy Charter Schools - a network of about 57 tuition-free public schools serving some 22,000 students from kindergarten through 12th grade, most of them Black and Hispanic children from underserved neighborhoods. It is now the largest charter network in New York City, and one of the most closely watched in the country.

The reason it gets watched is simple. Success Academy takes students by blind public lottery - no entrance exam, no interview, no audition - and then posts academic results that outrun districts spending far more per pupil. In 2025 the network ranked first in math and second in reading out of more than 700 school districts and charter networks across New York State. Whatever you make of charter schools, those are unusual numbers for a system that fills its seats at random.

01 / WHAT IT DOESA public school system, run like an institution with a method

At its core, Success Academy does the ordinary thing: it operates free public schools. What makes it unusual is how tightly it standardizes the work. The network designs its own curriculum, trains its own teachers, and runs a coaching-heavy culture in which lessons are rehearsed, observed and adjusted against frequent assessment data. Science is hands-on from the early grades. Chess, debate and the arts sit alongside reading and math rather than after them.

The model rests on a promise that most families never get from a lottery: a demanding, structured, high-expectations classroom in every building, not just the ones in expensive ZIP codes. Admission is a blind draw. What happens after enrollment is engineered.

02 / WHO IT SERVESFamilies first, and educators everywhere else

The primary customers are about 22,000 New York City children and their parents. The vast majority come from low-income households, and the network has built parent engagement into its operating model - Parent Teacher Associations at Success Academy have historically raised tens of millions of dollars on their own. Waitlists routinely run into the thousands, which tells you something about demand even before you reach the test scores.

There is a second, quieter set of users: teachers and school leaders far outside New York. Through the Success Academy Education Institute, the network publishes its curriculum, instructional materials, video libraries and professional development online so that other educators can borrow what works. It is an unusual move for any operator - handing rivals the recipe - and it reframes Success Academy as much as a content platform as a school system.

03 / THE PROBLEMThe achievement gap, taken personally

The problem Success Academy set out to solve is old and stubborn: children in poor neighborhoods routinely get weaker schools than children in rich ones, and the gap compounds year after year until it decides who reaches college. The founding pitch - give poor kids the opportunities rich kids have - was a direct swing at that gap.

The network's answer is not more spending per se, but a repeatable system: rigorous curriculum, heavily trained teachers, constant feedback loops, and a college-going culture that starts in the early grades. The results it points to are graduation outcomes. Across nine graduating classes and more than 1,000 alumni, Success Academy reports a 100% four-year college acceptance rate. In the Class of 2025, every graduate passed at least one Advanced Placement exam, and roughly two-thirds were headed to selective colleges including Yale, Cornell, the University of Chicago, Duke, Columbia and Penn.

04 / WHAT MAKES IT DIFFERENTThe four-week boot camp behind every teacher

Plenty of charter networks talk about rigor. Success Academy's differentiator is how much it invests before a teacher ever meets a class. New teachers go through an intensive summer training - about four weeks, part of it on a college campus running mock lessons, part of it teaching summer-school students under close observation. Returning teachers get a shorter refresher. Once the year starts, coaching is weekly and collaboration with veteran teachers is daily.

The other difference is the data. Instruction is tuned against frequent assessment, and the network treats classroom results the way a startup treats product metrics - measured, reviewed, iterated. That intensity draws criticism too: Success Academy has faced ongoing scrutiny over discipline and student attrition. It is not a quiet operation, and it does not pretend to be.

05 / THE MONEYPublic dollars, private muscle

Success Academy is a nonprofit. Its schools run mostly on public per-pupil funding, the same mechanism that funds any public school. What sets the network apart on the balance sheet is the private philanthropy stacked on top. Between 2019 and 2025, filings show roughly $242 million in grants from about 125 funders. The donor list reads like a Wall Street directory: Bloomberg Philanthropies, Julian Robertson's Robertson Foundation (which has given tens of millions), Daniel Loeb ($15 million toward high schools), and the Kenneth C. Griffin Charitable Fund ($10 million to expand middle schools), among others.

That funding does more than keep the lights on - it underwrites expansion and the Education Institute. The tradeoff is a familiar one in education reform: the network's scale and results are inseparable from a concentrated base of wealthy backers, which is exactly what its critics flag and its supporters celebrate.

06 / THE MARKETWhere it sits, and where it's going

In the landscape of high-performing charter networks - KIPP, Uncommon Schools, Achievement First, Democracy Prep - Success Academy is the largest and loudest in New York, and it competes directly with the city's traditional district schools, magnets and selective-admission programs for students and attention. Its founder, Eva Moskowitz, is a former history professor with a PhD from Johns Hopkins who chaired the City Council's education committee before starting the network. She remains its most public face, testifying before Congress and defending the model in a debate that never fully cools.

The newest chapter is geographic. In 2026, Success Academy won approval to co-locate in five Miami-Dade high schools - its first move outside New York - backed by a $50 million pledge from Ken Griffin and unveiled alongside Florida's governor. Twenty years after 165 kids walked into a Harlem building, the question is no longer whether the model works in New York, but whether it travels.