Summary:
Zip code 82801 in Sheridan, Wyoming, has two high schools, both serving grades 9–12: Sheridan High School enrolls 1,001 students, and John C. Schiffer Collaborative School enrolls 70. Their reported outcomes paint very different pictures of the area: Sheridan’s five 2025–2026 test proficiency rates are all above the state, while Schiffer’s are all below it. The most important takeaway is that results vary substantially between the two schools, rather than showing one consistent pattern across the ZIP code.
Sheridan High School stands out for test proficiency, exceeding the state by 14.0 to 24.8 percentage points across the five reported grade-and-subject comparisons. Its strongest result is grade 9 mathematics, at 71.3% versus 46.5% statewide. John C. Schiffer Collaborative School is below the state in all five comparisons, with results 5.6 to 26.1 points lower; the schools’ widest gap is in grade 10 science, where Sheridan is at 77.8% and Schiffer at 30.0%. However, Schiffer’s 2024–2025 graduation rate is higher: 86.4%, compared with Sheridan’s 83.9% and the state’s 83.1%.
Results changed over time, with Schiffer making the larger average gains across the five comparable tests: 11.9 percentage points from 2024–2025 to 2025–2026, versus 2.2 points at Sheridan and 2.9 statewide. Schiffer’s grade 10 science proficiency rose from 9.1% to 30.0%, though it remains below the state; Sheridan improved in grade 10 ELA and science but declined in both mathematics comparisons and grade 9 ELA. SchoolDigger rankings also moved up: Sheridan went from rank 12 of 80 schools (85th percentile) to rank 4 of 81 (95th percentile), while Schiffer rose from rank 74 (7th percentile) to rank 68 (16th percentile); their 2025–2026 ratings were five and one stars, respectively. As context, Sheridan’s student–teacher ratio is 14.2 versus Schiffer’s 8.8, and reported free/reduced-lunch eligibility is 32.4% versus 58.6%; these differences do not explain the achievement gap.
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