Do charter schools' test results reflect selection of motivated parents?
Core argument: Success Academy students test 99% proficient in math and 90% in English, results the account attributes in part to selection bias arising from its multi-step enrollment process.
Success Academy's impressive academic results, with 99% of students testing proficient in math and 90% in English, are likely influenced by selection bias. The rigorous enrollment process, requiring multiple steps and meetings, ensures only the most motivated parents persist, creating a parent body dominated by active, involved families. This self-selection mirrors affluent parents choosing private or suburban schools, giving Success Academy an advantage. While critics argue this skews results, the model also faces challenges, such as high teacher turnover and allegations of pushing out difficult students. Despite these issues, the academy's demanding culture and consistent curriculum contribute to its success, though the long-term impact on upward mobility remains uncertain.





Ed Comment: Selection bias, more so than I imagined.
"...“They do it by starting with a very exacting, demanding school culture that parents sign up for,” Pondiscio told The Post. Pondiscio, a veteran journalist, senior fellow at the Thomas B. Fordham Institute and a former fifth-grade teacher at a city-run Bronx public school, got permission from Success Academy’s powerhouse founder Eva Moskowitz, a former City Councilwoman, to “embed” in one of her schools in 2016-17. He spent hundreds of hours observing classrooms, as well as faculty and parent meetings.....Moskowitz calls the relationship between her schools and parents “a marriage,” Pondiscio writes..... Among the most surprising things Pondiscio learned, he said, is that many families who win admission in the lottery wind up not enrolling. “The conventional wisdom is that Success Academy has six applicants for every seat. It’s closer to 50/50,” he told The Post. While 3,000 families were picked by lottery in the spring of 2017, another 6,000 to 7,000 applicants were put on a “likely list,” Pondiscio found. He met a mom whose son was No. 106 on the waiting list — but finally got in. This happens, Pondiscio writes, because Success Academy requires so many preliminary steps and meetings that only the most motivated parents sign on.“They’ve got to show up, show up and show up again to ensure they remain active in the enrollment process,” he said. “By the time August rolls around, parents are walking in with both eyes open- 100% down with the program. If they aren’t, they fell away.” The result: a parent body dominated by active, involved families, “The myth is that Eva Moskowitz is creaming students,” Pondiscio said. “I don’t think that’s true, but she certainly is creaming parents.”