Average
#2795 of 4,739 schools in NY
School 21
Elementary School · YONKERS CITY SCHOOL DISTRICT
100 LEE AVE, Yonkers, NY 10705
Enrollment
306
Student-Teacher
14.6:1
Score
6.1
Grades
Pre-K – 6th
Enrollment
306
Student-Teacher
14.6:1
Score
6.1
Grades
Pre-K – 6th
Updated
2022-23
Updated 2022-23
How this school compares
In Yonkers
#14 of 41
public schools
New York elementary schools
#1,551 of 2,549
In district
#15 of 40
YONKERS CITY SCHOOL DISTRICT
Academic growth
8.2 / 10
Very strong
About School 21
SCHOOL 21 is a regular public elementary school in Yonkers, New York, nestled in a large suburban area. Serving students from pre-kindergarten through sixth grade, the school has an enrollment of 306 students and maintains a student-teacher ratio of 14.6:1 with 21 full-time equivalent teachers. Despite a MySchoolScout Rating of 4.3 out of 10 and ranking #3398 among New York’s 4758 schools, the school is committed to continuous improvement in academic performance.
In terms of test scores, SCHOOL 21 has 43% of its students proficient or above in ELA/Reading and 24% proficient or above in Math. These figures indicate areas where the school can focus on strengthening student achievement through targeted support programs and initiatives. Located in Yonkers, the school benefits from a supportive community environment with ample opportunities for families to engage and contribute.
What Parents Should Know
While current test scores at School 21 are below average, the school shows strong growth metrics — meaning students are making above-average progress year over year. This upward trajectory can be a positive indicator for families who value a school's ability to help students improve, even if absolute scores haven't caught up yet.
Score Breakdown
Full Profile · 3/3 metricsView breakdown
View breakdown
Data not available for this school
View breakdown
School 21 — Students at School 21 score 34% proficient, which is below what's typical for similar communities (expected: 56%).
Equity & Diversity
Shown separately, not included in overall scoreFree/Reduced Lunch
56.5%
Students qualifying for federal meal assistance
Test Scores NY NYSED (2020-21)
Based on 12 test records from NY state assessments. About our data
Proficiency Trend
↑ ImprovingAverage proficiency (% at or above grade level) across Math & ELA over time.
* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.
Source: EdFacts (NCES) and state assessment data. Growth score: 8.2/10.
How School 21 Compares
See how School 21 performs across key quality dimensions compared to state benchmarks.
Funding & Resources
Performance Trends
Math proficiency has declined from 31% (2019) to 22% (2021). Reading/ELA proficiency has improved from 29% (2019) to 47% (2021).
Location
100 LEE AVE, Yonkers, NY 10705
Nearby Alternatives
Families considering School 21 may also want to explore other elementary schools in the area. ST BARNABAS ELEMENTARY SCHOOL (rated 7.8/10, 0.9 miles away, in nearby Bronx), which scores notably higher. Another option is ST MARK'S LUTHERAN SCHOOL (rated 7.2/10, 0.8 miles away), which scores notably higher. Additionally, EUGENIO MARIA DE HOSTOS MICROSOCIETY SCHOOL (rated 6.8/10, 1.4 miles away), which scores slightly higher. For more schools in Yonkers, see our Yonkers schools guide .
Nearby Schools
20 within 1.6 mi| School | Distance | Rating |
|---|---|---|
| STEIN YESHIVA OF LINCOLN PARK Yonkers | 0.5 mi | — |
| LAS HERMANAS MIRABAL COMMUNITY SCHOOL Yonkers | 0.6 mi | 4.2 |
| LINCOLN HIGH SCHOOL Yonkers | 0.9 mi | 5.3 |
| ST MARK'S LUTHERAN SCHOOL Yonkers | 0.8 mi | 7.2 |
| PS 19 JUDITH K WEISS Bronx | 1.0 mi | 5.9 |
| ST BARNABAS ELEMENTARY SCHOOL Bronx | 0.9 mi | 7.8 |
| ST BARNABAS HIGH SCHOOL Bronx | 1.0 mi | 6.1 |
| YONKERS MONTESSORI ACADEMY Yonkers | 0.9 mi | 5.5 |
| YONKERS MIDDLE SCHOOL Yonkers | 1.2 mi | 5.1 |
| YONKERS HIGH SCHOOL Yonkers | 1.2 mi | 7.2 |
| NEW TESTAMENT CHURCH SCHOOL Yonkers | 1.2 mi | — |
| ST JOHN THE BAPTIST Yonkers | 1.1 mi | 4.9 |
| SCHOOL 23 Yonkers | 1.4 mi | 6.0 |
| ELLA FITZGERALD ACADEMY Yonkers | 1.4 mi | 5.3 |
| CESAR E CHAVEZ SCHOOL Yonkers | 1.4 mi | 4.4 |
| ST MARGARET OF CORTONA SCHOOL Bronx | 1.3 mi | 6.4 |
| EUGENIO MARIA DE HOSTOS MICROSOCIETY SCHOOL Yonkers | 1.4 mi | 6.8 |
| BRONX DANCE ACADEMY SCHOOL Bronx | 1.7 mi | 3.0 |
| PS 103 HECTOR FONTANEZ Bronx | 1.5 mi | 5.9 |
| ENRICO FERMI SCHOOL FOR THE PERFORMING ARTS Yonkers | 1.6 mi | 4.6 |
Neighborhood Census ACS (2019-2023)
Census data for ZIP 10705 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$68,616
Median Home Value
$445,600
Median Rent
$1,602/mo
Population
40,390
College Educated
30.1%
Homeownership
36.4%
Avg Commute
38.2 min
Poverty Rate
18%
Median Age
38.6
Community Profile
The community surrounding School 21 has a median household income of $68,616. It is an area where 30% of adults hold a bachelor's degree or higher. The median home value in the area is $445,600, with a median rent of $1,602/month. The area has a poverty rate of 18.0%. The average commute in the area is 38 minutes, which is above the national average. Source: U.S. Census ACS 2022 5-Year Estimates.
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| ALLEN ROAD ELEMENTARY SCHOOL North Syracuse, NY | 6.1 |
| ANN G MCGUINNESS ELEMENTAR SCHOOL Endicott, NY | 6.1 |
| BIG CROSS STREET SCHOOL Glens Falls, NY | 6.1 |
| CANDOR ELEMENTARY SCHOOL Candor, NY | 6.1 |
| EAST VIEW ELEMENTARY SCHOOL Olean, NY | 6.1 |
| FRANK M KNIGHT ELEMENTARY SCHOOL Seneca Falls, NY | 6.1 |
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 is ranked #2795 out of 4,739 schools in NY.
What is School 21's MySchoolScout rating?
School 21 has a composite rating of 6.1 out of 10 on MySchoolScout. This score combines academic performance, student growth, and school environment into a single score. Equity data is shown separately for context.
What are the test scores at School 21?
Based on the most recent state assessment data, School 21 has 24.3% math proficiency and 43.0% reading/ELA proficiency.
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.
Explore More Schools
Neighborhood Context
- City Safety
- Elevated (1,338/100K)
FBI UCR 2024. City-level (Yonkers). Data >1 year old.
Quick Facts NCES CCD (SY 2022-23)
- Grades
- Pre-K – 6th
- Enrollment
- 306
- Student-Teacher Ratio
- 14.6:1
- Teachers (FTE)
- 21
- Free/Reduced Lunch
- 56.5%
- Type
- regular
- Setting
- Large Suburb
- County
- Westchester County
- Phone
- (914) 376-8435
- Data Year
- 2023–2024
Resources & Links
District
YONKERS CITY SCHOOL DISTRICT- District Enrollment
- 24,339
- Schools in District
- 40
- Per-Pupil Spending
- $28,185
- District Rank
- #15 of 40
Other Schools in This District
How We Rate Schools
Every school receives a composite score from 1 to 10 based on four pillars: Academic Performance (50%), Student Growth (20%), Equity (15%), and Learning Environment (15%). Scores are built from publicly available data including standardized test results, enrollment figures, and school climate indicators.
Read our full methodologyRelated reading
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- Charter Schools vs Public Schools: What the Data Actually Shows (2026)school choice
- Student-Teacher Ratio by State: Complete 2026 Rankingsdata insights
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