Average
#2702 of 4,742 schools in NY
School 21
Elementary School · Yonkers City School District · Yonkers, NY
A Yonkers City School District elementary school where students score 14 points below what's typical for similar communities.
100 LEE AVE, Yonkers, NY 10705
- Math 31% proficient (2022)
- Reading 40% proficient (2022)
- 14.6:1 student-teacher ratio
Academics
Full Profile · 3/3 metricsView breakdown
View breakdown
View breakdown
Students at School 21 score 35% proficient, which is below what's typical for similar communities (expected: 50%).
2022 EdFacts proficiency
Most recent published year. School vs. NY average.
Trend
↑ RecoveringProficiency declined earlier in the 14-year record (2009–2022), then recovered 5 points since 2019, reaching 35% in 2022.
Show all 14 years
Multi-year averages used by the rating model: math 30% (multi-year average, 2009-2022) · reading/ELA 35% (multi-year average, 2009-2022)
* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.
Based on 36 test records from NY state assessments and EdFacts (NCES).
Equity & diversity
Shown separately, not included in the overall scoreFree/reduced lunch
56.5%
Students qualifying for federal meal assistance
How we rate schools
A clear 1–10 score built from public data — growth, academics, and learning environment. No hidden criteria, no pay-to-play.
See how we rateThe neighborhood
Where School 21 sits, and what the surrounding area looks like.
Nearby same-level schools are colored by their score. Pins are locations, not attendance boundaries. Open the New York map →
Getting around & local context
- Walk 78Very Walkable
- Transit 48Some Transit
- Bike 46Somewhat Bikeable
- City Safety: Elevated1,338/100K
Powered by
FBI Uniform Crime Reporting · 2024 · city context (Yonkers), not school-level safety or attendance eligibility. Source details
Source period: 2024. Freshness not available.
Area profileU.S. Census ACS 5-year estimates (ACS 2019–2023 5-year estimates)
Median income
$68,616
Median home value
$445,600
Median rent
$1,602/mo
College educated
30.1%
Homeownership
36.4%
Poverty rate
18%
ACS 2019–2023 5-year estimates for the ZCTA associated with school ZIP 10705; this is area context, not an attendance boundary.
Compare nearby
Nearby same-level schools
4 from a 5-mile search; district fallback available
| School | Score | Grades | Distance | Enrollment | Compare |
|---|---|---|---|---|---|
| Stein Yeshiva of Lincoln ParkPrivate · tuition | Not rated | PK–8 | 0.5 mi | 14 | Compare → |
| Las Hermanas Mirabal Community SchoolEnrollment path unverified | 5.6 | PK–8 | 0.6 mi | 588 | Compare → |
| St Mark's Lutheran SchoolPrivate · tuition | 7.2private | PK–8 | 0.8 mi | 50 | Compare → |
| St Barnabas Elementary SchoolPrivate · tuition | 7.8private | PK–8 | 0.9 mi | 277 | Compare → |
Distance is proximity only; it is not attendance eligibility.
Private · tuition: Potential private option; tuition and admission requirements have not been verified.
Enrollment path unverified: Potential public school; its attendance or application path has not been classified.
Public and private scores come from different models and are shown side by side, not blended into one ranking.
Yonkers City School District
- Schools in district
- 40
- Rank in district
- #18 of 40
- District spending per student
- $28,185NCES F-33 · FY 2023 · This annual source is three years behind the current year.
- District child poverty rate
- 14.7%Census SAIPE · 2024
School 21 is listed in YONKERS CITY SCHOOL DISTRICT; a district label does not verify attendance for an address.
About School 21
School 21 is a public elementary school in Yonkers, NY, part of Yonkers City School District, serving approximately 306 students in grades Pre-K-6th with a 14.6:1 student-teacher ratio. It holds a MySchoolScout rating of 6.0 out of 10 and ranks #2,702 of 4,742 schools in NY. State assessment records show 30% math proficiency (multi-year average, 2009-2022) and 35% reading/ELA proficiency (multi-year average, 2009-2022).
Frequently asked questions
Common questions about School 21
What grades does School 21 serve?
School 21 serves students in grades Pre-K through 6th.
How many students attend School 21?
School 21 has an enrollment of approximately 306 students.
What is the student-teacher ratio at School 21?
The student-teacher ratio at School 21 is 14.6:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does School 21 rank in NY?
School 21 ranks #2,702 of 4,742 schools in NY.
What is School 21's MySchoolScout rating?
School 21 has a current MySchoolScout rating of 6.0 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.
What are the test scores at School 21?
Based on loaded state assessment records, School 21 has 30% math proficiency (multi-year average, 2009-2022) and 35% reading/ELA proficiency (multi-year average, 2009-2022).
Is School 21 a charter school?
No, School 21 is not a charter school. It is a traditional public school operated by the local school district.
Is School 21 a Title I school?
No, School 21 is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for School 21?
56.5% of students at School 21 qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.
School factsNCES Common Core of Data (CCD) (SY 2023–24)
- Grades
- Pre-K – 6th
- Enrollment
- 306
- Student-Teacher Ratio
- 14.6:1
- Teachers (FTE)
- 21
- Type
- regular
- Setting
- Large Suburb
- County
- Westchester County
- Chronic Absenteeism (SY 2022-23)
- 57.8%
- Phone
- (914) 376-8435
- Area population (ZIP 10705)
- 40,390
- Area average commute
- 38.2 min
- Area median age
- 38.6
Official sources & links
About this school's data
Every number on this page comes from a published source with a stated period. Where a source is partial, aging, or describes a surrounding area rather than the school, that limitation is named below.
- School directory (enrollment, grades, staff, contact)
- NCES Common Core of Data (CCD) · SY 2023–24 · Medium confidence
- Source period: SY 2023–24. A newer release may be available.
- MySchoolScout rating and rank
- MySchoolScout ranking model · Low confidence
- Vintage not available. Do not use this measure alone.
- Derived as a weighted blend of the component scores shown in Academics from state assessment, EdFacts growth, and NCES resource records.
- Math proficiency
- State department of education · 2022 EdFacts · Low confidence
- Older source: 2022 EdFacts. Use as historical context.
- Available for part of the eligible units; results may not represent the full area.
- Derived from source records rather than read directly from one field.
- Reading/ELA proficiency
- State department of education · 2022 EdFacts · Low confidence
- Older source: 2022 EdFacts. Use as historical context.
- Available for part of the eligible units; results may not represent the full area.
- Derived from source records rather than read directly from one field.
- Student progress (growth)
- NCES EdFacts · Mixed source periods · Low confidence
- Vintage not available. Do not use this measure alone.
- Available for part of the eligible units; results may not represent the full area.
- Derived as the fitted year-over-year slope of proficiency from multi-year assessment records.
- Neighborhood (income, housing, education)
- U.S. Census ACS 5-year estimates · ACS 2019–2023 5-year estimates · Low confidence
- Older source: ACS 2019–2023 5-year estimates. Use as historical context.
- Reported for the ZCTA for ZIP 10705; this does not measure the attendance area.
Evidence periods: Rating mixed/unknown input periods; assessments multi-year average, 2009-2022; directory SY 2023–24
Related reading
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- Best States for Public Schools in 2026: A Complete Rankingdata insights
- Charter Schools vs Public Schools: What the Data Actually Shows (2026)school choice
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