Summary:
Lambertville has two listed schools in the South Hunterdon Regional School District: South Hunterdon Regional Elementary School serves pre-K through grade 4 and has 265 students, while South Hunterdon Regional High School serves grades 9–12 and has 377; no middle school is listed. Because they serve different grades, their test scores are best understood as comparisons with the state, not as a direct contest between schools. The clearest finding is that the elementary school was above state proficiency rates in all four of its tested grade-and-subject comparisons in 2025–2026, by 9 to 15 points.
The elementary school stands out for its consistent state-leading results: grade 3 ELA was 61% versus 48% statewide, and grade 4 was 55% versus 46%; in math, it was 59% versus 49% in grade 3 and 62% versus 47% in grade 4. The high school has a more mixed profile. Its strongest listed result was grade 11 NJGPA ELA at 79%, 3 points above the state, while its weakest was Algebra I end-of-course at 10%, 30 points below. Graduation is a bright spot: 96% in 2024–2025 versus 89% statewide, with a 0% dropout rate versus 1% statewide.
Results shifted in different directions over time. At the elementary school, grade 3 ELA rose 19 points from 2024–2025 to 2025–2026, while grade 4 ELA fell 10 points but remained above the state; the school’s average advantage over the state grew from 4 to 11 points in ELA and from 9 to 12 in math. At the high school, Algebra I fell 8 points and its state gap widened from 20 to 30 points below; grade 9 ELA improved 7 points, narrowing its gap by 5. SchoolDigger rates the elementary school 3 stars (421 of 1,331; 68th percentile) and the high school 2 stars (261 of 434; 40th percentile). In 2024–2025, both reported free/reduced lunch eligibility—31% at the elementary school and 30% at the high school—and student–teacher ratios were 8.1 and 7.8, respectively. Chronic absenteeism was 12% at the elementary school and 18% at the high school, compared with 14% statewide.
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