- Enrollment
- 265
- Students per teacher
- 12.6:1
- Resource Index
- 63/100
Elementary school (grades K-5) · Mountainside, NJ
Deerfield Elementary School
Federal NCES profile for Deerfield Elementary School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 56/100.
2024-25 NCES dataElementary school (grades K-5)NCES 341104005588
👥 S:T ratio 61
🌟 Gifted program 70
🎓 Counselors 3
📋 Attendance 88
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Deerfield Elementary School earns 56/100 on the Resource Investment Index, with class sizes smaller than 78% of New Jersey schools.
- 56
- Resource Index · Higher
- 9.7:1
- small classes for New Jersey
- 2.1%
- free-lunch eligible
- 483
- students enrolled
Deerfield Elementary School has class sizes smaller than 78% of New Jersey schools. Computed live against every New Jersey school reporting to NCES.
School address
District: Mountainside School District · New Jersey
NCES ID 341104005588 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
+21 students YoY
Deerfield Elementary School held near 488 students from 2022-23 to 2023-24 (+21 headcount).
Teacher FTE lost 50.6 → 48.9 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
+21 students YoY 341104005588 · Mountainside, NJ Elementary · SMALL · TRAD
483 enr · 9.7:1 · 2.1% lunch · RII 56
Nearest enrollment peer: Beechwood School (265 students)
Deerfield Elementary School held near 488 students from 2022-23 to 2023-24 (+21 headcount). Teacher FTE lost 50.6 → 48.9 across the same CCD years. Read with this school → · District book → · New Jersey schools → · Find another →
How Deerfield Elementary School compares
Deerfield Elementary School held steady on CCD headcount: ratios and free-lunch share vs New Jersey and U.S. means.
| Metric | This school | vs New Jersey | New Jersey avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 9.7:1 | ▼ 18% | 11.8:1 | 15.7:1 |
| Free-lunch eligible | 2.1% | ▼ 93% | 29.6% | 51.7% |
| Enrollment | 483 | top 42% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
9.7:1
Leaner classes than 90% of US schools, among the more generously staffed nationally.
483
Bigger than 59% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Economic need
2.1%
free-lunch eligible
- 93% below the New Jersey average of 29.6%
Below the 40% Title I threshold, among the lower-need profiles in the state; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
9.7:1
students per teacher
- 18% below state mean
Top 22% in New Jersey - lower ratio than 78% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
4.8%
chronically absent (missed 10%+ of school days)
Below 5%, comfortably under the pre-pandemic national baseline for chronic absenteeism.
Funding equity
$23,111
per pupil, district-wide
- below New Jersey avg of $26,225
Well above the U.S. public-school average, reflecting substantially higher local or state investment per enrolled student.
Support staff
Counselors1.0 FTE
Per 483 students, the combined health-and-guidance staffing load for this school.
Discipline context
6
in-school suspensions + 1 out-of-school
Suspension rate: 1.2 per 100 students. Combined in-school and out-of-school rate: 1.4 per 100 students. Reported via the Civil Rights Data Collection. Includes 1 expulsion.
Student demographics
White 69.4%
Hispanic or Latino 13.5%
Asian 8.7%
Two or More 7.2%
African American 0.8%
American Indian / Alaska Native 0.2%
Native Hawaiian / Pacific Islander 0.2%
Largest group: White at 69.4% of enrollment.
Student-body diversity index 48.7/100
Simpson diversity index - at 48.7, Deerfield Elementary School is less mixed than the New Jersey school average of 51.2.
Programs
Gifted & talented Yes
District finance for Mountainside School District reports $23,111 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Deerfield Elementary School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Beechwood School | Smaller | Similar economic need | Higher S:T ratio |
Comparisons are relative to Deerfield Elementary School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
Nationwide elementary schools with similar size or staffing
Out-of-state peers matched by enrollment and by student-teacher ratio, not the same-city or same-district lists above.
Similar enrollment (~483 students)
Frequently asked questions about Deerfield Elementary School
How many students attend Deerfield Elementary School?
Deerfield Elementary School has 483 students enrolled. It is an elementary school in Mountainside, NJ. CCD year-over-year: 467 (2022-23) → 488 (2023-24), nearly flat (+21).
What is the student-teacher ratio at Deerfield Elementary School?
The student-teacher ratio at Deerfield Elementary School is 9.7:1, which is 18% lower than the New Jersey average of 11.8:1 and 38% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What percentage of students receive free lunch at Deerfield Elementary School?
2.1% of students at Deerfield Elementary School are eligible for free lunch, compared to the New Jersey average of 29.6%.
What is the racial and ethnic makeup of Deerfield Elementary School?
The largest demographic group at Deerfield Elementary School is White at 69.4% of enrollment, in Mountainside, NJ.
What is the Resource Investment Index for Deerfield Elementary School?
Deerfield Elementary School has a Resource Investment Index of 56/100 (higher reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, gifted-program reporting, counselor availability, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology).
What other schools are in Mountainside School District?
Besides Deerfield Elementary School, Mountainside School District also operates Beechwood School (265 students). See the Mountainside School District district page for the complete list.