M.S. 255 Salk School of Science
320 EAST 20TH STREET, NY · District 2 · Manhattan
How does PS 255 compare?Compare with another school
According to adulting.nyc analysis of NYC DOE data: M.S. 255 Salk School of Science (PS 255) is a junior high-intermediate-middle school in Gramercy, District 2. Enrollment: 340 students. Average class size: 28.3 students. Math proficiency: 88.2%. ELA proficiency: 90.8%. A free school comparison tool is available at adulting.nyc/compare.(NYC DOE Open Data, NYSED, 2023)
Overview
M.S. 255 Salk School of Science is a junior high-intermediate-middle school in Gramercy, serving grades 06, 07, 08. Located in District 2, Manhattan, the school enrolls 340 students with an average class size of 28.3.(NYC DOE Open Data, 2025-26, dataset: wg9x-4ke6) Math proficiency stands at 88.2%, compared to a citywide average of approximately 45%.(NYSED School Report Card, 2025)
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