Deerfield Elementary School
🇺🇸 Official data · 2025Mountainside, New Jersey 07092 · Mountainside School District
#29 of 440 middle schools in New Jersey
#86 of 15,369 nationally
About Deerfield Elementary School
Deerfield Elementary School is a public middle located in Mountainside, in the Mountainside School District school district of New Jersey, United States. It caters for Grades 3–8. In 2025 it enrolled 483 students. Traditional public schools run by a school district; free to attend.
Its Success Index (US) is 93.9 out of 100, placing it in the top 5% of middle schools in United States and 29th of 440 ranked middle schools in New Jersey. Its strongest component is community advantage (fewer free/reduced-price lunch) (100th percentile), and its weakest is students per teacher (89th percentile).
Other published figures: enrollment 483.
There are 2 schools in Mountainside; Deerfield Elementary School ranks 1st of 2 scored schools there.
Success Index (US) breakdown
Each component is a percentile against middle schools across United States.
- Math proficiency (30%)73%
- Reading proficiency (30%)81%
- Community advantage (fewer free/reduced-price lunch) (25%)2.9%
- Students per teacher (15%)10.7
The Success Index (US) summarises published data about a school community. It is not a measure of teaching quality. Read the methodology.
Published measures
All figures published for Deerfield Elementary School by the official sources.
- Enrollment
- 483
- Students enrolled in the latest NCES directory year.
- Free/reduced-price lunch
- 2.9%
- Share of students eligible for free or reduced-price lunch.
- Students per teacher
- 10.7
- Enrollment divided by FTE teachers; not class size.
- Reading proficiency
- 81%
- Share of tested students proficient or above (all students, all grades).
- Math proficiency
- 73%
- Share of tested students proficient or above (all students, all grades).
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Schools near Deerfield Elementary School
Closest schools by straight-line distance, with their Success Index (US).
Beechwood School
Mountainside · Public elementary · Grades PK–2
265 students · 1.9 km away
Wilson Elementary School
Westfield · Public elementary · Grades 1–5
362 students · 2.2 km away
Edward V. Walton Primary School
Springfield · Public elementary · Grades PK–3
511 students · 2.3 km away
Thelma L. Sandmeier Elementary School
Springfield · Public elementary · Grades 3–5
276 students · 2.4 km away
Primary Center at Jefferson
Summit · Public elementary · Grades PK–K
116 students · 2.7 km away
Jefferson Elementary School
Summit · Public elementary · Grades 1–5
221 students · 2.7 km away
Washington Elementary School
Westfield · Public elementary · Grades 1–5
300 students · 2.7 km away
Franklin Elementary School
Westfield · Public elementary · Grades 1–5
509 students · 2.8 km away
Governor Livingston High School
Berkeley Heights · Public high · Grades 9–12
849 students · 3.2 km away
Brayton Elementary School
Summit · Public elementary · Grades 1–5
335 students · 3.3 km away
Similar schools
Public middle schools in New Jersey with a comparable Enrollment.
Grace Wilday Junior High School
Roselle · Public middle · Grades 7–8
482 students
Lincoln/Roosevelt School
Succasunna · Public middle · Grades 5–6
484 students
Dover Middle School
Dover · Public middle · Grades 7–8
481 students
Somerset School
North Plainfield · Public middle · Grades 5–6
485 students
Leonard V Moore Middle School
Roselle · Public middle · Grades 5–6
485 students
Washington Park School
Totowa · Public middle · Grades 4–8
485 students
Frequently asked questions
Is Deerfield Elementary School a good school?
Deerfield Elementary School has a Success Index (US) of 93.9 out of 100 (Top 5% of middle schools in United States) and ranks #29 of 440 in New Jersey. The index summarises published data about the school community and, where available, attainment; it does not measure teaching quality, so visit the school and ask about support at your child's level.
Where does Deerfield Elementary School rank in New Jersey?
Deerfield Elementary School ranks #29 of 440 middle schools in New Jersey and #86 of 15,369 nationally on the Success Index (US) (2025 data).
How many students attend Deerfield Elementary School?
Deerfield Elementary School had 483 students in 2025.
Is Deerfield Elementary School a elementary school or a high school?
Deerfield Elementary School is classified as a middle covering Grades 3–8. It is a public school.
What other schools are near Deerfield Elementary School?
There are 10 schools within 15 km of Deerfield Elementary School; they are listed on this page with their Success Index (US) and distance, and can be compared side by side.