Summary:
Stockton, Illinois, has three schools in Stockton CUSD 206, serving grades PK–12 and enrolling 490 students; school sizes range from 100 students at Stockton Middle School to 220 at Stockton Elementary School. Results vary substantially by subject and grade, so no one school leads every measure. The clearest academic strength is Middle’s English Language Arts (ELA): its 2025–2026 all-grades proficiency was 83%, compared with 56% statewide, a 27-percentage-point advantage.
Stockton Middle School stands out most in ELA, with results above the state in grades 6, 7, and 8; grade 7 was 88% versus 58%, a 30-point gap. Its all-grades math result was much closer to the state: 40.4% versus 39.6%, about a 1-point advantage. Stockton Elementary School was stronger in math than ELA overall—51% versus 40% statewide in math, and 60% versus 56% in ELA—but grade 5 ELA was 47%, 8 points below the state. Stockton Senior High School has a split profile: grade 11 ACT ELA was 67% versus 50% statewide, while grade 10 PreACT ELA and science were 32% and 30%, respectively, compared with 54% and 48% statewide. Grade 11 ACT math is state-suppressed.
Recent elementary and middle results show both strengths and shifts: Elementary all-grades ELA fell 15 points from 2024–2025 to 2025–2026, narrowing its state advantage from 22 points to 4; its math fell 13 points, though it remained 11 points above the state. Middle ELA fell 5 points but remained well above state, while math rose 7 points to just above it. SchoolDigger placed Elementary at the 65th percentile, Middle at the 76th, and High at the 54th in 2025–2026. Student–teacher ratios were 11.8 at Elementary and High and 11.0 at Middle. Free/reduced lunch eligible shares in 2024–2025 were 47% at Elementary, 41% at High, and 37% at Middle; these figures describe school context, not a cause of results. Chronic absenteeism was below the state rate at all three schools, and High’s graduation rate was 92%, versus 90% statewide.
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