Eight schools, the SHSAT, and the test-prep economy

The 8 specialized high schools enroll about 15,700 students combined. New York City's high-school enrollment is roughly 270,000, so the specialized schools account for about 6% of high-school seats. The Big Four — Brooklyn Tech, Stuyvesant, Bronx Science, and Staten Island Tech — together enroll about 13,500, or 86% of specialized enrollment. They have noticeably less demographic mixing than the smaller four. When the news cycles discuss demographic concentration at specialized high schools, it's almost always a Big Four story.

Across the 8 specialized high schools combined, the share of students who are English Language Learners is statistically zero. Stuyvesant, Bronx Science, Brooklyn Tech, Staten Island Tech, and Brooklyn Latin all report 0.0%. The four smaller schools report 0.0-0.3%.

For context: New York City high schools serve roughly 35,000 English Language Learner students in total — about 14% of high-school enrollment. Almost none of them attend a specialized school.

The mechanism is direct: the Specialized High Schools Admissions Test (SHSAT) is administered in English, and students who could clear the cut-score in their native language usually can't clear it in English.

The public conversation about specialized-high-school reform centers on Black and Hispanic share of seats. English-learner share is a separate, larger gap from the citywide demographic mix, and gets less attention. Whether that should be a reform priority depends on what reform is trying to achieve.

The Big Four enroll 1.5-2.2% students with disabilities, against a citywide high-school share of 21-25% (depending on definition). So the Big Four enroll roughly a tenth of the share you'd predict from citywide rates.

The smaller specialized schools enroll meaningfully more. HSMSE at City College is at 8%, closer to citywide but still below. Brooklyn Latin is at 3.5%.

The pattern: the older specialized high schools (the Big Four) have the most distinctive demographics relative to New York City overall. The newer, smaller specialized schools (HSMSE, HSAS at Lehman) sit closer to citywide composition — possibly because of admissions design, possibly because they're less culturally established.

All 8 specialized schools graduate 96-100% of students within 4 years (for the 2020-21 cohort). The lowest is Brooklyn Tech at 96.1%, which is also the largest and most demographically mixed. Three of the schools graduate 100%.

Some of that is selection: students admitted to a specialized school are pre-selected for academic ability and the kind of family support that helps them finish. Not graduating is rare in that population.

A more informative outcome to measure would be college persistence, major selection, and time-to-degree at the schools' alumni attend. CUNY publishes some of this; New York State doesn't centralize it. A reporting project would have to assemble it.

Specialized high schools serve about 6% of New York City's high-school seats. They also concentrate a large share of the city's highest-scoring students.

How a reader weighs that 6% depends on what they care about. A reader who treats top-end academic opportunity as per-student high-value will see the 6% as understating the importance. A reader who treats the denominator as the 94% of students at other high schools will see the SHSAT debate as crowding out larger questions.