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S
41.1/ 100
Success Index (US)
Lower 50%

#1688 of 2,536 elementary schools in New York
#31229 of 50,301 nationally

How is this calculated?
Students
380
Enrollment
380
Source: NCES CCD
Free/reduced-price lunch
88.7%
Source: NCES CCD
Students per teacher
11.2
Source: NCES CCD

About Ps 21 Margaret Emery-Elm Park

Ps 21 Margaret Emery-Elm Park is a public elementary located in Staten Island, in the New York City Geographic District #31 school district of New York, United States. It caters for Grades PK–5. In 2025 it enrolled 380 students. Traditional public schools run by a school district; free to attend.

Its Success Index (US) is 41.1 out of 100, placing it in the lower 50% of elementary schools in United States and 1688th of 2,536 ranked elementary schools in New York. Its strongest component is students per teacher (87th percentile), and its weakest is community advantage (fewer free/reduced-price lunch) (19th percentile).

Other published figures: enrollment 380.

There are 81 schools in Staten Island; Ps 21 Margaret Emery-Elm Park ranks 56th of 79 scored schools there.

Success Index (US) breakdown

Each component is a percentile against elementary schools across United States.

  • Math proficiency (30%)42%
  • Reading proficiency (30%)42%
  • Community advantage (fewer free/reduced-price lunch) (25%)88.7%
  • Students per teacher (15%)11.2

The Success Index (US) summarises published data about a school community. It is not a measure of teaching quality. Read the methodology.

Published measures

All figures published for Ps 21 Margaret Emery-Elm Park by the official sources.

Enrollment
380
Students enrolled in the latest NCES directory year.
Free/reduced-price lunch
88.7%
Share of students eligible for free or reduced-price lunch.
Students per teacher
11.2
Enrollment divided by FTE teachers; not class size.
Reading proficiency
42%
Share of tested students proficient or above (all students, all grades).
Math proficiency
42%
Share of tested students proficient or above (all students, all grades).

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Schools near Ps 21 Margaret Emery-Elm Park

Closest schools by straight-line distance, with their Success Index (US).

Similar schools

Public elementary schools in New York with a comparable Enrollment.

Frequently asked questions

Is Ps 21 Margaret Emery-Elm Park a good school?

Ps 21 Margaret Emery-Elm Park has a Success Index (US) of 41.1 out of 100 (Lower 50% of elementary schools in United States) and ranks #1688 of 2,536 in New York. The index summarises published data about the school community and, where available, attainment; it does not measure teaching quality, so visit the school and ask about support at your child's level.

Where does Ps 21 Margaret Emery-Elm Park rank in New York?

Ps 21 Margaret Emery-Elm Park ranks #1688 of 2,536 elementary schools in New York and #31229 of 50,301 nationally on the Success Index (US) (2025 data).

How many students attend Ps 21 Margaret Emery-Elm Park?

Ps 21 Margaret Emery-Elm Park had 380 students in 2025.

Is Ps 21 Margaret Emery-Elm Park a elementary school or a high school?

Ps 21 Margaret Emery-Elm Park is classified as a elementary covering Grades PK–5. It is a public school.

What other schools are near Ps 21 Margaret Emery-Elm Park?

There are 10 schools within 15 km of Ps 21 Margaret Emery-Elm Park; they are listed on this page with their Success Index (US) and distance, and can be compared side by side.