Excellent
#214 of 2,466 schools in NJ
Top 9% in state
Deerfield Elementary School
Middle School · Mountainside School District · Mountainside, NJ
A Mountainside School District middle school where students score 13 points above what's typical for similar communities.
302 CENTRAL AVENUE, Mountainside, NJ 07092
- Math 79% vs NJ 44% (2025)
- Reading 82% vs NJ 54% (2025)
- 10.2:1 student-teacher ratio
Academics
Full Profile · 3/3 metricsView breakdown
View breakdown
View breakdown
Students at Deerfield Elementary School score 80% proficient, which is above what's typical for similar communities (expected: 67%).
2025 NJSLA proficiency
Most recent published year. School vs. NJ average.
Trend
↑ RecoveringProficiency declined earlier in the 17-year record (2009–2025), then recovered 23 points since 2021, reaching 81% in 2025.
Show all 16 years
Multi-year averages used by the rating model: math 74% (multi-year average, 2009-2025) · reading/ELA 78% (multi-year average, 2009-2025)
* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.
Based on 53 test records from NJ state assessments and EdFacts (NCES).
Equity & diversity
Shown separately, not included in the overall scoreFree/reduced lunch
2%
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 Deerfield Elementary School 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 34Car-Dependent
- Bike 34Somewhat Bikeable
- City Safety: Average354/100K
Powered by
FBI Uniform Crime Reporting · 2024 · city context (Mountainside), 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
$210,100
Median home value
$755,600
Median rent
$3,501/mo
College educated
66.2%
Homeownership
86.9%
Poverty rate
2.8%
ACS 2019–2023 5-year estimates for the ZCTA associated with school ZIP 07092; this is area context, not an attendance boundary.
Programs & students
Programs & Offerings
Compare nearby
Nearby same-level schools
4 from a 5-mile search
| School | Score | Grades | Distance | Enrollment | Compare |
|---|---|---|---|---|---|
| Kohler AcademyPrivate · tuition | 7.6private | PK–12 | 0.6 mi | 34 | Compare → |
| Roosevelt Intermediate SchoolEnrollment path unverified | 6.7 | 6–8 | 2.1 mi | 668 | Compare → |
| Florence M. Gaudineer Middle SchoolEnrollment path unverified | 7.4 | 6–8 | 2.2 mi | 494 | Compare → |
| Lawton C. Johnson Summit Middle SchoolEnrollment path unverified | 7.6 | 6–8 | 2.2 mi | 929 | 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.
Mountainside School District
- Schools in district
- 2
- Rank in district
- #1 of 2
- District spending per student
- $23,457NCES F-33 · FY 2023 · This annual source is three years behind the current year.
- District child poverty rate
- 1.6%Census SAIPE · 2024
Deerfield Elementary School is listed in Mountainside School District; a district label does not verify attendance for an address.
About Deerfield Elementary School
Deerfield Elementary School is a public middle school in Mountainside, NJ, part of Mountainside School District, serving approximately 488 students in grades 3rd-8th with a 10.2:1 student-teacher ratio. It holds a MySchoolScout rating of 8.4 out of 10 and ranks #214 of 2,466 schools in NJ. State assessment records show 74% math proficiency (multi-year average, 2009-2025) and 78% reading/ELA proficiency (multi-year average, 2009-2025).
Frequently asked questions
Common questions about Deerfield Elementary School
What grades does Deerfield Elementary School serve?
Deerfield Elementary School serves students in grades 3rd through 8th.
How many students attend Deerfield Elementary School?
Deerfield Elementary School has an enrollment of approximately 488 students.
What is the student-teacher ratio at Deerfield Elementary School?
The student-teacher ratio at Deerfield Elementary School is 10.2:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does Deerfield Elementary School rank in NJ?
Deerfield Elementary School ranks #214 of 2,466 schools in NJ.
What is Deerfield Elementary School's MySchoolScout rating?
Deerfield Elementary School has a current MySchoolScout rating of 8.4 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 Deerfield Elementary School?
Based on loaded state assessment records, Deerfield Elementary School has 74% math proficiency (multi-year average, 2009-2025) and 78% reading/ELA proficiency (multi-year average, 2009-2025).
Is Deerfield Elementary School a charter school?
No, Deerfield Elementary School is not a charter school. It is a traditional public school operated by the local school district.
Is Deerfield Elementary School a Title I school?
No, Deerfield Elementary School is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for Deerfield Elementary School?
2.0% of students at Deerfield Elementary School 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
- 3rd – 8th
- Enrollment
- 488
- Student-Teacher Ratio
- 10.2:1
- Teachers (FTE)
- 48
- Type
- regular
- Setting
- Large Suburb
- County
- Union County
- Chronic Absenteeism (SY 2022-23)
- 4.1%
- Phone
- (908) 232-8828
- Area population (ZIP 07092)
- 6,967
- Area average commute
- 38.9 min
- Area median age
- 48.7
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 · 2025 NJSLA · Medium confidence
- Available for part of the eligible units; results may not represent the full area.
- Source period: 2025 NJSLA. A newer release may be available.
- Derived from source records rather than read directly from one field.
- Reading/ELA proficiency
- State department of education · 2025 NJSLA · Medium confidence
- Available for part of the eligible units; results may not represent the full area.
- Source period: 2025 NJSLA. A newer release may be available.
- Derived from source records rather than read directly from one field.
- Student progress (growth)
- State assessments · 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 07092; this does not measure the attendance area.
- Programs (AP/IB, athletics, gifted)
- CRDC via Urban Institute · SY 2021–22 · Medium confidence
- Available for part of the eligible units; results may not represent the full area.
- Source period: SY 2021–22. A newer release may be available.
Evidence periods: Rating mixed/unknown input periods; assessments multi-year average, 2009-2025; directory SY 2023–24
Related reading
Get school insights in your inbox
New rankings, best-schools lists, and parent guides — delivered free. No spam, unsubscribe anytime.
We respect your privacy. Unsubscribe at any time.