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Test scores

NJSLA, SY 2024-25

All grades, all students. % Meeting or Exceeding Expectations.
English Language Arts
92.7%
State avg 53.1%
District avg 92.7%
County avg 60.5%
+0.7pp since 2023-24
Mathematics
90.9%
State avg 41.6%
District avg 90.9%
County avg 50.7%
+4.3pp since 2023-24
Science
61.6%
State avg 26.8%
District avg 61.6%
County avg 30.3%
-14.1pp since 2023-24

What this means: On the NJSLA, New Jersey's statewide test, about 93 of every 100 students at this school read and write at grade level, about 91 of 100 do math at grade level, and about 62 of 100 are at grade level in science. Across all New Jersey schools, those numbers are about 53, 42, and 27. Reading and writing scores have held steady since 2023, while math scores are up about 4 points and science scores are down about 14 points.

BeatsExpectations

Demographically-adjusted score · methodology
Tier
OUTPERFORMING
Top 10% of NJ schools after controlling for student poverty
Actual proficiency
86.1%
composite math + reading, all grades
Predicted
64.1%
based on NJ schools with similar FRL share
Beats by
+22.1pp
above demographic expectation

What this means: About 86% of students here test proficient in math and reading, well above the roughly 64% typical for New Jersey schools with a similar share of low-income students. BeatsExpectations ranks schools against others at the same poverty level, not by raw scores, so a school can post high scores and still fall short of its prediction, or post lower scores and still beat it. This school clears its prediction by about 22 points, placing it in New Jersey's top 10%.

BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →

By grade, SY 2024-25

School score vs state average per tested grade.
GradeEnglish Language ArtsMathematicsScience
SchoolStaten testedSchoolStaten testedSchoolStaten tested
Grade 392.9%44.9%14100.0%49.7%14N/AN/AN/A
Grade 584.7%52.8%1392.3%44.2%1376.9%30.1%13
Grade 6100.0%56.2%1492.8%39.8%14N/AN/AN/A
Grade 7100.0%57.1%1478.6%38.8%14N/AN/AN/A
Grade 884.6%57.1%13N/A20.7%N/A46.2%19.0%13

2-year history

All grades, all students. H W Mountz   New Jersey avg

English Language Arts

52922023-2453932024-25
YearSchoolDistrictCountyState
SY 2024-2592.7%92.7%60.5%53.1%
SY 2023-2492.0%92.0%59.5%52.2%

Mathematics

39872023-2442912024-25
YearSchoolDistrictCountyState
SY 2024-2590.9%90.9%50.7%41.6%
SY 2023-2486.6%86.6%48.5%39.4%

Science

25762023-2427622024-25
YearSchoolDistrictCountyState
SY 2024-2561.6%61.6%30.3%26.8%
SY 2023-2475.7%75.7%28.3%25.0%

How to read these scores

What is NJSLA?
NJSLA is the statewide standardized test administered by New Jersey public schools.
What does "% Meeting or Exceeding Expectations" mean?
It is the share of students at the school who performed at grade level or above on the test, summed across the top two of four performance levels. A higher number is better.
What does 92.7% mean for English Language Arts at H W Mountz Elementary School?
It means about 92.7 percent of students tested at H W Mountz Elementary School performed at grade level or above on the NJSLA English Language Arts test in 2024-25. The statewide average for New Jersey that year was 53.1%. The other students fell into the lower performance levels.
How is the state average calculated?
It is a weighted average, not a simple average of each school's number. We multiply each public school's score by how many of its students tested, add those together for all schools in New Jersey, and divide by the total students tested that year. This way a big school with 1,500 students counts more than a small school with 50 students, which is the right way to ask "how did the typical student do this year?". District and county averages on this page use the same method, just scoped to that district or county.
Where does this data come from?
New Jersey Department of Education, New Jersey Student Learning Assessments (NJSLA). Per-grade per-subject Spring administration: ELA grades 3-9, Math grades 3-8 + Algebra I/II + Geometry, Science grades 5/8/11. School-level All Students subgroup from the NJDOE Statewide Assessment Reports. Headline metric is the cumulative 'Meeting or Exceeding Expectations' rate (top 2 of 5 ELA/Math levels; top 2 of 4 Science levels).
How often is it updated?
NJSLA is administered once a year (spring). Results are released by the state in the summer or early fall. We refresh this page after each annual release.

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