Summary:
Mercer County has six schools serving pre-K through grade 12: two elementary schools, one middle school and three high schools. Results differ substantially between the two high schools: Mercer County Senior High School scored above the state in all six reported subject-and-grade results for 2025–2026, while Mercer Central scored below the state in all four results available for comparison. The most important finding is that high-school outcomes vary sharply by school, with matched results separated by 19 to 39 percentage points.
Mercer County Intermediate School is another standout: nine of its ten reported results were above the state, with a mean advantage of 5 points. Its Reading scores exceeded the state by 8 to 10 points across grades 3–5. Kenneth D. King Middle School has a more mixed profile, with three of ten results above the state and seven below. In the four matched high-school comparisons, Senior High led Mercer Central by 39 points in grade 10 Mathematics, 29 in grade 10 Reading, 19 in grade 11 Science and 33 in grade 11 Editing and Mechanics. Mercer Central’s mean gap was 21 points below the state; Senior High’s was 8 points above.
Across 26 results available in both years, the average school-to-state gap improved by about 2 points from 2024–2025 to 2025–2026, but school trends differed. Intermediate’s grade 5 Editing and Mechanics rose 18 points, while Senior High’s Writing fell 7 points; SchoolDigger’s statewide percentile ranking for Intermediate also climbed from 36 to 64 between 2023–2024 and 2025–2026. School contexts differ too: in 2024–2025, free/reduced lunch eligible shares were 60% at Intermediate and 61% at King Middle, compared with 56% at Senior High and 78% at Mercer Central; student–teacher ratios were 15.4, 15.7, 17.3 and 12.7, respectively. Mercer County Elementary School has no scores in the supplied data, and Mercer County Day Treatment’s listed scores are suppressed.
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