Serving 380 students in grades Prekindergarten-5, P.s. 21 Margaret Emery-elm Park ranks in the top 50% of all schools in New York for overall test scores (math proficiency is top 50%, and reading proficiency is top 50%).
The percentage of students achieving proficiency in math is 55-59% (which is higher than the New York state average of 52%). The percentage of students achieving proficiency in reading/language arts is 50-54% (which is higher than the New York state average of 49%).
The student-teacher ratio of 11:1 is equal to the New York state level of 11:1.
Minority enrollment is 90% of the student body (majority Hispanic), which is higher than the New York state average of 61% (majority Hispanic).
Quick Facts (2026-27)
- Grades: Prekindergarten-5
- Enrollment: 380 students
- Student-Teacher Ratio: 11:1
- Minority Enrollment: 90%
- Overall Testing Rank: Top 50% in NY
- Math Proficiency: 55-59% (Top 50%)
- Reading Proficiency: 50-54% (Top 50%)
- Science Proficiency: 70-79% (Btm 50%)
- Attendance Zone: PS 21 Margaret Emery-Elm Park serves a compact attendance zone of approximately 0.4 square miles in Staten Island, NY, with most students living within a 5-10 minute drive from the school. The furthest edge of this zone is about 0.7 miles away from the school.
- Source: National Center for Education Statistics (NCES), NY Dept. of Education
School Overview
P.s. 21 Margaret Emery-elm Park's student population of 380 students has stayed relatively flat over five school years.
The teacher population of 34 teachers has declined by 5% over five school years.
Grades Offered
Grades Prekindergarten-5
(Supplemental Virtual)
(Supplemental Virtual)
Total Students
380 students
Total Classroom Teachers
34 teachers
School Rankings
P.s. 21 Margaret Emery-elm Park ranks within the top 50% of all 4,346 schools in New York (based off of combined math and reading proficiency testing data).
The diversity score of P.s. 21 Margaret Emery-elm Park is 0.52, which is less than the diversity score at state average of 0.73. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#1637 out of 4346 schools
(Top 50%)
(Top 50%)
Math Test Scores (% Proficient)
55-59%
52%
Reading/Language Arts Test Scores (% Proficient)
50-54%
49%
Science Test Scores (% Proficient)
70-79%
78%
Student-Teacher Ratio
11:1
11:1
American Indian
1%
1%
Asian
5%
10%
Hispanic
67%
31%
Black
15%
15%
White
10%
39%
Hawaiian
n/a
n/a
Two or more races
2%
4%
All Ethnic Groups
Chronically Absent Students
(22-23)50.3%
34.8%
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
88%
55%
Eligible for Reduced Lunch
1%
3%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), NY Dept. of Education
Frequently Asked Questions
What is P.s. 21 Margaret Emery-elm Park's ranking?
P.s. 21 Margaret Emery-elm Park is ranked #1637 out of 4,346 schools, which ranks it among the top 50% of public schools in New York.
What schools are P.s. 21 Margaret Emery-elm Park often compared to?
P.s. 21 Margaret Emery-elm Parkis often viewed alongside schools like P.s. 18 John G Whittier, P.s. 19 Curtis School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
55-59% of students have achieved math proficiency (compared to the 52% NY state average), while 50-54% of students have achieved reading proficiency (compared to the 49% NY state average).
How many students attend P.s. 21 Margaret Emery-elm Park?
380 students attend P.s. 21 Margaret Emery-elm Park.
What is the racial composition of the student body?
67% of P.s. 21 Margaret Emery-elm Park students are Hispanic, 15% of students are Black, 10% of students are White, 5% of students are Asian, 2% of students are Two or more races, and 1% of students are American Indian.
What is the student-teacher ratio of P.s. 21 Margaret Emery-elm Park?
P.s. 21 Margaret Emery-elm Park has a student ration of 11:1, which is equal to the New York state average of 11:1.
What grades does P.s. 21 Margaret Emery-elm Park offer ?
P.s. 21 Margaret Emery-elm Park offers enrollment in grades Prekindergarten-5 (Supplemental Virtual).
What school district is P.s. 21 Margaret Emery-elm Park part of?
P.s. 21 Margaret Emery-elm Park is part of New York City Geographic District #31.
In what neighborhood is P.s. 21 Margaret Emery-elm Park located?
P.s. 21 Margaret Emery-elm Park is located in the Port Richmond neighborhood of Staten Island, NY. There are 5 other public schools located in Port Richmond.
School Reviews
Review P.s. 21 Margaret Emery-elm Park. Reviews should be a few sentences in length. Please include any comments on:
- Quality of academic programs, teachers, and facilities
- Availability of music, art, sports and other extracurricular activities
Recent Articles
How to Evaluate School Safety Beyond Headlines
Learn how to evaluate school safety beyond headlines by examining reliable data, school climate, emergency planning, bullying prevention, communication, student experiences, and everyday security practices before choosing a school.
Choosing a Public School for Executive Function Needs
Learn how to choose a public school for a child with executive function challenges by evaluating routines, classroom support, organization, accommodations, communication, transitions, and special education services before enrollment.
What School Climate Surveys Tell You Before Enrolling
Learn how school climate surveys reveal student safety, belonging, relationships, engagement, and support, and how families can interpret results carefully before choosing a public school for their child today.
