Serving 393 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 10:1 is lower than the New York state level of 11:1.
Minority enrollment is 88% of the student body (majority Hispanic), which is higher than the New York state average of 60% (majority Hispanic).
Quick Facts (2025-26)
- Grades: Prekindergarten-5
- Enrollment: 393 students
- Student-Teacher Ratio: 10:1
- Minority Enrollment: 88%
- 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%)
- Source: National Center for Education Statistics (NCES), NY Dept. of Education
Top Rankings
P.s. 21 Margaret Emery-elm Park ranks among the top 20% of public schools in New York for:
Category
Attribute
Percent Eligible For Free Lunch
School Overview
P.s. 21 Margaret Emery-elm Park's student population of 393 students has grown by 13% over five school years.
The teacher population of 38 teachers has grown by 18% over five school years.
Grades Offered
Grades Prekindergarten-5
(Supplemental Virtual)
(Supplemental Virtual)
Total Students
393 students
Gender %
Total Classroom Teachers
38 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 0.55, which is less than the diversity score at state average of 0.72. 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
10:1
11:1
American Indian
1%
1%
Asian
5%
10%
Hispanic
64%
30%
Black
16%
16%
White
12%
40%
Hawaiian
n/a
n/a
Two or more races
2%
3%
All Ethnic Groups
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
87%
54%
Eligible for Reduced Lunch
1%
3%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), NY Dept. of Education
Profile last updated: 02/09/2025
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?
393 students attend P.s. 21 Margaret Emery-elm Park.
What is the racial composition of the student body?
64% of P.s. 21 Margaret Emery-elm Park students are Hispanic, 16% of students are Black, 12% 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 10:1, which is lower than 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 School District.
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.
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