NJSLA, SY 2024-25
All grades, all students. % Meeting or Exceeding Expectations.English Language Arts
62.1%
State avg 53.1%
District avg 68.3%
County avg 53.3%
-5.4pp since 2023-24
Mathematics
32.4%
State avg 41.6%
District avg 54.6%
County avg 39.0%
+5.5pp since 2023-24
Science
24.6%
State avg 26.8%
District avg 25.7%
County avg 25.1%
-5.4pp since 2023-24
What this means: On the NJSLA, New Jersey's statewide test, about 62 of every 100 students at this school read and write at grade level, about 32 of 100 do math at grade level, and about 25 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 are down about 5 points since 2023, while math scores are up about 6 points and science scores are down about 5 points.
BeatsExpectations
Demographically-adjusted score · methodologyTier
UNDERPERFORMING
Bottom 10% of NJ schools after controlling for student poverty
Actual proficiency
40.6%
composite math + reading, all grades
Predicted
60.6%
based on NJ schools with similar FRL share
Beats by
-20.1pp
below demographic expectation
What this means: About 41% of students here test proficient in math and reading, below the roughly 61% typical for New Jersey schools with a similar share of low-income students. BeatsExpectations compares each school with others at the same poverty level, not by raw scores, so a school lands here when its results trail those comparable schools, which is not the same as having low scores. A higher-scoring school can still fall in this tier if similar schools score higher still.
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual.
How this is calculated →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 62.1% mean for English Language Arts at Arthur L. Johnson High School?
It means about 62.1 percent of students tested at Arthur L. Johnson High 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.
