Jefferson School
School pathway
Test scores
NJSLA 2024-25 . % Meeting or Exceeding ExpectationsWhat this means: On the NJSLA, New Jersey's statewide test, about 56 of every 100 students at this school read and write at grade level and about 39 of 100 do math at grade level. Across all New Jersey schools, those numbers are about 53 and 42. Reading and writing scores have held steady since 2023, while math scores are down about 4 points.
BeatsExpectations
Demographically-adjusted score · methodologyWhat this means: About 45% of students here test proficient in math and reading, compared with the roughly 40% 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%.
7-year change
SY 2017-18 vs SY 2024-25About Jefferson School
As a cozy elementary school in LYNDHURST, New Jersey, Jefferson School works with 256 students from grades 3 through 5, operated by Lyndhurst Public School District. Compared to the state average of about 405 students per school, that is 37% smaller than typical.
Lyndhurst Public School District comprises 9 schools with combined enrollment of 2,606 students; Jefferson School is among them.
In terms of who attends, Jefferson School reports that the largest single group is Hispanic at 50%, but no single group is in the majority. The remainder breaks down as 36% White, 5% Black, 5% Asian, 4% multiracial. The wider county runs roughly 23% Hispanic, putting the school's mix visibly more Hispanic than the area baseline.
On the resource side, Staff filings list 19 full-time-equivalent teachers, which works out to roughly 13.8:1 students per teacher. The state averages around 11.4:1, so this campus is higher than the state norm typical. Around 47% of the student body qualifies for free or reduced-price meals, often used as a Title I proxy. By comparison, Bergen County runs at roughly 28%, so the school's eligibility rate is meaningfully above the surrounding baseline.
On a residual basis (actual vs predicted given the student mix), Jefferson School performs roughly as the BeatsExpectations model predicts for a school with this FRL share. The predicted value is around 40.3%, the actual is 45.0%, a residual of +4.7 points.
In the area at large, community-level numbers for Bergen County indicate the typical household earns roughly $124,884 per year, roughly 53% of adults have completed at least a four-year degree, and roughly 5% of residents live below the federal poverty line. Jefferson School is one of 291 public schools in Bergen County (combined enrollment of about 133,883 students).
Memorial School is the nearest neighboring public school, about 0.1 miles from this campus. Counting just inside five miles, 8 other public schools cluster around Jefferson School. Ranking that nearby cluster on reported proficiency puts Jefferson School at 3rd of 6; the average score across the group is 53.8%.
Geographically, the school is in a commuter-belt area.
Over the past 7-year window. Over the past 7-year window, the student count fell 6%: 272 students in 2018 compared to 256 in 2025. The White share of enrollment ticked down from 57% to 36% over that span. The student-to-teacher ratio grew from 12.7:1 in 2018 to 13.8:1 today.
Within the allk12 community for this school, the feed for Jefferson School typically covers science fair prep, picture-day reminders, and bus-route questions. Contributors range from current parents to recent graduates and teachers.
Bergen County at a glance
View full county profileQuick facts
Related schools
- Lyndhurst High SchoolHigh · 841 students
- Lyndhurst Middle SchoolMiddle · 610 students
- Roosevelt SchoolElementary · 295 students
- Franklin SchoolElementary · 196 students
- Washington SchoolElementary · 162 students
- Columbus SchoolElementary · 102 students
- Lyndhurst High SchoolHigh · 841 students
- Lyndhurst Middle SchoolMiddle · 610 students
- Roosevelt SchoolElementary · 295 students
- Franklin SchoolElementary · 196 students
- Washington SchoolElementary · 162 students
- Columbus SchoolElementary · 102 students
- Memorial School0.1 mi · 94
- Columbus School0.5 mi · 102
- Franklin School0.6 mi · 196
- Pierrepont School0.6 mi · 569
- Lyndhurst High School0.6 mi · 841
- Lincoln School0.7 mi · 500