1
What's the state of after-school transportation at Deerfield Elementary School?
Community prompt from u/allk12. Replies below.
Enrollment
483
Middle
DISTRICT 374 · STATE 578
SCHOOL COMMUNITY·MOUNTAINSIDE SCHOOL DISTRICT·NCES 341104005588
Deerfield Elementary School
302 CENTRAL AVENUE, MOUNTAINSIDE, NJ 07092 · (908) 232-8828 · Union County
GRADES 03–08MIDDLE21-SUBURBREGULAR SCHOOL483 STUDENTS
A
allk12 Grade
Scored higher than 94% of New Jersey public middle schools
- A+Test scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- ABeats expectations How far test scores land above or below what the share of low-income students predicts for a school in this state.
- ·Three-year trend Not available for this school, so the grade uses the other parts.
Grades compare a school only with schools in the same state, because every state gives its own test. How grades work · Top-graded New Jersey public middle schools
Student : Teacher
10.7:1
45 FTE teachers
DISTRICT 12.0:1 · STATE 10.9:1
Free / Reduced Lunch
3%
14 students
DISTRICT 3% · STATE 41%
Community
1
0 members
Enrollment and student:teacher ratio compared against other middle schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Grade 3 | 76 | 16% |
| Grade 4 | 92 | 19% |
| Grade 5 | 74 | 15% |
| Grade 6 | 77 | 16% |
| Grade 7 | 83 | 17% |
| Grade 8 | 81 | 17% |
Student demographics
49%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 50% · STATE 71% · US 70%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
School pathway
Feeds from
Based on grade levels within Mountainside School District. Attendance zones can vary; confirm enrollment with the district.
Test scores
NJSLA 2024-25 . % Meeting or Exceeding ExpectationsEnglish Language Arts
82.0%
NJ avg 53.1% . +1.4pp since 2023
Math
78.9%
NJ avg 41.6% . +3.5pp since 2023
What this means: On the NJSLA, New Jersey's statewide test, about 82 of every 100 students at this school read and write at grade level and about 79 of 100 do math at grade level. Across all New Jersey schools, those numbers are about 53 and 42. Reading and writing scores are up about 1 points since 2023, while math scores are up about 4 points.
NJSLA results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 82.0% | 78.9% |
| 2023-24 | 80.6% | 75.4% |
% Meeting or Exceeding Expectations, all students and all tested grades.
Source: NJSLA. All students, all grades. See all years and grades →
BeatsExpectations
Demographically-adjusted score · methodologyTier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
73.6%
composite math + reading, all grades
Predicted
64.6%
based on NJ schools with similar FRL share
Beats by
+9.1pp
above demographic expectation
What this means: About 74% of students here test proficient in math and reading, compared with the roughly 65% typical for New Jersey schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among New Jersey's top nor bottom 10%.
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →
Schools most like Deerfield Elementary School
Deerfield Elementary School's state test result (73.6% proficient) is higher than 5 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Deerfield Elementary School this school | 483 | 2.9% | 73.6% |
| West Essex Middle School NORTH CALDWELL | 558 | 4.8% | 58.6% |
| Valleyview Middle School DENVILLE | 571 | 6.0% | 61.5% |
| Waldwick Middle School WALDWICK | 401 | 1.0% | 64.2% |
| Madison Junior School MADISON | 555 | 7.6% | 64.8% |
| Millstone Township Middle School Millstone Township | 423 | 8.0% | 52.8% |
Matched among New Jersey middle schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.
Where Deerfield Elementary School ranks
Among middle schools| Measure | This school | In New Jersey | In Union County |
|---|---|---|---|
| State test proficiency ranked highest first | 73.6% | #15 of 433 | #1 of 25 |
| Math proficiency ranked highest first | 78.9% | #19 of 437 ▲ 3 | #1 of 25 no change |
| Reading proficiency ranked highest first | 82.0% | #47 of 437 ▼ 9 | #5 of 25 no change |
| Enrollment ranked largest first | 483 | #265 of 445 | #20 of 26 |
| Students per teacher ranked fewest first | 10.7:1 | #200 of 417 | #6 of 25 |
| Diversity index ranked most diverse first | 48.8% | #268 of 419 | #18 of 25 |
| Free and reduced lunch ranked highest share first | 2.9% | #404 of 436 | #19 of 25 |
| Enrollment change since 2017-18 ranked steepest decline first | -1.4% | #261 of 282 | #9 of 13 |
Ranked against other public middle schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.
4-year change
SY 2020-21 vs SY 2024-25Enrollment
483
+22 (+5%) vs 2020
+1% since 1990-91, when it was 476
Student : Teacher
10.7:1
was 9.4:1
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 483 | 45.1 | 10.7:1 | 3% (14) |
| 2023-24 | 488 | 48.9 | 10.0:1 | 2% (10) |
| 2022-23 | 467 | 50.6 | 9.2:1 | 2% (10) |
| 2020-21 | 461 | 49 | 9.4:1 | 1% (5) |
| 2017-18 | 490 | 45.7 | 10.7:1 | 3% (16) |
| 2015-16 | 498 | 45 | 11.1:1 | 2% (12) |
| 2010-11 | 535 | 32 | 16.7:1 | 1% (3) |
| 2000-01 | 647 | 45 | 14.4:1 | 0% (0) |
| 1990-91 | 476 | 36 | 13.2:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Deerfield Elementary School.
Since 2017-18: students down 1% (490 to 483); teachers down 1% (45.7 to 45.1).
About Deerfield Elementary School
Deerfield Elementary School is a low-enrollment middle-grades school in Mountainside School District, located in MOUNTAINSIDE, New Jersey. The school serves 483 students in grades 3 through 8 in 2024-25.
Enrollment across the 2 schools in Mountainside School District totals 748 students.
White students account for 69% of enrollment at Deerfield Elementary School. Other groups make up 13% Hispanic, 9% Asian, and 7% multiracial. Union County as a whole is about 39% White, so the school's share is higher. The chance that two students picked at random at Deerfield Elementary School belong to different racial or ethnic groups, known as the diversity index, is 49%.
Teacher staffing is 45.1 full-time equivalents, or about 10.7 students per teacher. Middle schools in New Jersey average about 10.9:1, a similar figure. About 3% of students, or 14, qualify for free or reduced-price lunch. It compares with 52% for public schools in Union County.
The allk12 Grade for Deerfield Elementary School is A. Compared with New Jersey public middle schools, the school scored higher than 94% on a mix of test scores, poverty-adjusted results, and recent trend.
The model predicts 64.6% for a school in New Jersey with Deerfield Elementary School's free or reduced-price lunch share. Deerfield Elementary School posts 73.6%.
According to the American Community Survey, in Union County, median household income is about $103,202, roughly 39% of adults have a four-year degree or more, and about 7% of residents live below the federal poverty line. Deerfield Elementary School is one of 180 public schools in Union County, which together enroll about 99,046 students.
Crossroads School is the closest public school, about 1.0 miles away in a straight line. There are at least 8 more public schools inside five miles. Among the 6 closest schools with test data, this one included, Deerfield Elementary School ranks 3rd on average proficiency.
Deerfield Elementary School is coded as Suburb: Large in federal locale data.
The student count in 2024-25 was 483, 5% above the 461 of 2020-21. The school's ratio rose from 9.4:1 to 10.7:1 between 2020-21 and 2024-25.
Discussion on this page can cover school safety, transportation, and start times. Reviews and ratings from people who know the school are welcome.
Union County at a glance
View full county profilePopulation
579,290
Census ACS
Median income
$103,202
Household, ACS
Bachelor's+
39%
Adults 25+
Poverty rate
7%
Below federal line
Schools in county
180
99,046 students
Quick facts
Related schools
Other schools in Mountainside School District
- Beechwood SchoolElementary · 265 students
Other Deerfield Elementary schools
13 other US public schools in 11 states are named Deerfield Elementary. Deerfield Elementary School is the 4th largest of the 14.
- Deerfield ElementaryLexington, SC · 753 students
- Deerfield ElementaryEdgewood, MD · 708 students
- Deerfield ElementaryIrvine, CA · 615 students
- Deerfield Elementary SchoolNOVI, MI · 459 students
- Deerfield ElemLawrence, KS · 433 students
Nearby schools
- Crossroads School1.0 mi · 52
- Beechwood School1.2 mi · 265
- Wilson Elementary School1.4 mi · 362
- Edward V. Walton Primary School1.4 mi · 511
- Thelma L. Sandmeier Elementary School1.5 mi · 276
- Primary Center at Jefferson1.7 mi · 116
Frequently asked questions
About Deerfield Elementary SchoolWhat is the total enrollment at Deerfield Elementary School?
Deerfield Elementary School enrolls approximately 483 students in grades 03-08.
What age range does Deerfield Elementary School serve?
Deerfield Elementary School serves students from grade 03 through grade 08.
How many students per teacher at Deerfield Elementary School?
Approximately 10.7:1 students per teacher at Deerfield Elementary School.
How diverse is Deerfield Elementary School?
Deerfield Elementary School reports a student body of 69% White, 13% Hispanic, 1% Black, 9% Asian, 7% Two or more.
What district is Deerfield Elementary School in?
Deerfield Elementary School is part of Mountainside School District.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.