1,026 Students
Middle School 6th - 8th
School Overview
MS 51 William Alexander, located in the Park Slope neighborhood of Brooklyn, is a highly regarded public middle school known for its strong emphasis on community, academic rigor, and the arts. The school operates with a philosophy that focuses on the "whole child," blending a challenging curriculum with extensive support systems to ensure students are prepared for competitive high schools. It is widely recognized for its inclusive environment and its commitment to fostering social-emotional growth alongside traditional academic achievement.

One of MS 51’s most distinctive features is its robust arts program, which includes specialized tracks in areas like drama, music, and visual arts, allowing students to explore their creativity deeply. Beyond the arts, the school is well-regarded for its collaborative faculty, active parent association, and a variety of extracurricular clubs that cater to diverse student interests. Because of its strong reputation and high demand, it remains one of the most sought-after middle schools in District 15, drawing families who value a well-rounded, inquiry-based educational experience.
1,026
Total Students
76.0
Full-Time Teachers
13.5
Student/Teacher Ratio
60.9%
Free/Reduced Lunch
Student Demographics

Student Demographics Data Table

Student Demographics for MS 51 WILLIAM ALEXANDER
Demographic Student Count
White285
Hispanic344
Black91
Asian241
Two or More57
American Indian3
Pacific Islander5
  • Hispanic
    344 (33.5 %)
  • White
    285 (27.8 %)
  • Asian
    241 (23.5 %)
  • Black
    91 (8.9 %)
  • Two or More
    57 (5.6 %)
  • Pacific Islander
    5 (0.5 %)
  • American Indian
    3 (0.3 %)
School Location
School Details
Status: Open
School Level: Middle School
School Type: Regular School
Charter Status:* Public Non-Charter
Virtual Instruction: No virtual instruction
Shared Time Status: No
District: NEW YORK CITY GEOGRAPHIC DISTRICT #15
Phone: (718)369-7603
Grade Range: 6th - 8th
Total Students: 1,026
Full-Time Teachers (FTE): 76.0
Pupil/Teacher Ratio: 13.5
NSLP Participation:1 Yes under Community Eligibility Option (CEO)
Qualified Free Lunch: 588
Qualified Reduced Lunch: 37
Grades Taught
Grade 6 359
Grade 7 349
Grade 8 318

Grades Taught Data Table

Grades Taught and Student Counts for MS 51 WILLIAM ALEXANDER
Grade Student Count
Grade 6359
Grade 7349
Grade 8318
Gender Ratio

Student Gender Ratio Data Table

Student Gender Ratio for MS 51 WILLIAM ALEXANDER
Gender Student Count Percentage
Female52751.4%
Male49948.6%
Nearby Middle Schools (Within 10 Miles)