Gary Rubinstein explores a curious phenomenon at Success Academy. Fully one-seventh of its senior class fail to graduate.

How can this be? They have persisted through 11 years of the school’s harsh discipline, yet are told midway through their senior year that they must repeat the grade or leave.

Public data shows that very few students who begin at Success Academy actually graduate from Success Academy. The class of 2018 started with 72 students and only 16 graduated. The class of 2019 started with 80 students and only 27 graduated. The class of 2020 started with 350 students and only 98 graduated. Success Academy argues that this is normal attrition over 12 years, but one of the most jarring statistics I have ever seen about Success Academy is the attrition rate from students who are in the school at the beginning of their senior year but who do not graduate with their class 10 months later.

For the recent class of 2020 there were 114 seniors in the school in November 2019. But by graduation time in June there were only 98 graduating seniors.

Why?