School 21
🇺🇸 Official data · 2025Yonkers, New York 10705 · Yonkers City School District
#2113 of 2,536 elementary schools in New York
#39718 of 50,301 nationally
About School 21
School 21 is a public elementary located in Yonkers, in the Yonkers City School District school district of New York, United States. It caters for Grades PK–6. In 2025 it enrolled 328 students. Traditional public schools run by a school district; free to attend.
Its Success Index (US) is 28.2 out of 100, placing it in the lower 50% of elementary schools in United States and 2113th of 2,536 ranked elementary schools in New York. Its strongest component is community advantage (fewer free/reduced-price lunch) (43th percentile), and its weakest is reading proficiency (16th percentile).
Other published figures: enrollment 328.
There are 40 schools in Yonkers; School 21 ranks 18th of 37 scored schools there.
Success Index (US) breakdown
Each component is a percentile against elementary schools across United States.
- Math proficiency (30%)31%
- Reading proficiency (30%)29%
- Community advantage (fewer free/reduced-price lunch) (25%)66.2%
- Students per teacher (15%)15.6
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 School 21 by the official sources.
- Enrollment
- 328
- Students enrolled in the latest NCES directory year.
- Free/reduced-price lunch
- 66.2%
- Share of students eligible for free or reduced-price lunch.
- Students per teacher
- 15.6
- Enrollment divided by FTE teachers; not class size.
- Reading proficiency
- 29%
- Share of tested students proficient or above (all students, all grades).
- Math proficiency
- 31%
- Share of tested students proficient or above (all students, all grades).
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Schools near School 21
Closest schools by straight-line distance, with their Success Index (US).
Las Hermanas Mirabal Community School
Yonkers · Public elementary · Grades PK–8
594 students · 1.0 km away
Justice Sonia Sotomayer Community School District
Yonkers · Public elementary · Grades PK–7
423 students · 1.3 km away
Lincoln High School
Yonkers · Public high · Grades 9–12
1,176 students · 1.4 km away
Yonkers Montessori Academy
Yonkers · Public other · Grades PK–12
1,234 students · 1.4 km away
Ps 19 Judith K Weiss
Bronx · Public elementary · Grades PK–8
679 students · 1.6 km away
Yonkers Middle School
Yonkers · Public middle · Grades 7–8
540 students · 1.9 km away
Yonkers High School
Yonkers · Public high · Grades 9–12
1,111 students · 1.9 km away
Montessori School 27
Yonkers · Public elementary · Grades PK–6
332 students · 2.2 km away
Ps 16 Wakefield
Bronx · Public elementary · Grades PK–5
343 students · 2.2 km away
Eugenio Maria de Hostos Microsociety School
Yonkers · Public elementary · Grades PK–8
590 students · 2.2 km away
Similar schools
Public elementary schools in New York with a comparable Enrollment.
Martin Avenue Elementary School
Bellmore · Public elementary · Grades K–6
328 students
Smith Early Learning Center
Poughkeepsie · Public elementary · Grades PK–1
328 students
Saint Regis Mohawk School
Hogansburg · Public elementary · Grades PK–5
328 students
Virginia Road Elementary School
White Plains · Public elementary · Grades K–2
328 students
Sauquoit Valley Elementary School
Sauquoit · Public elementary · Grades K–4
327 students
Joseph B Radez Elementary School
Richmondville · Public elementary · Grades 3–6
327 students
Frequently asked questions
Is School 21 a good school?
School 21 has a Success Index (US) of 28.2 out of 100 (Lower 50% of elementary schools in United States) and ranks #2113 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 School 21 rank in New York?
School 21 ranks #2113 of 2,536 elementary schools in New York and #39718 of 50,301 nationally on the Success Index (US) (2025 data).
How many students attend School 21?
School 21 had 328 students in 2025.
Is School 21 a elementary school or a high school?
School 21 is classified as a elementary covering Grades PK–6. It is a public school.
What other schools are near School 21?
There are 10 schools within 15 km of School 21; they are listed on this page with their Success Index (US) and distance, and can be compared side by side.