Big Oak Flat-Groveland Unified

Big Oak Flat-Groveland Unified has three schools serving 268 students: Tenaya Elementary (K–8) and two high schools, Tioga High and Don Pedro High (grades 9–12). In the latest results, for 2025–2026, math is the clearest weakness across the schools with reported scores: their average was 11% proficient, compared with 38% statewide, a 27-point shortfall; the average gaps were 18 points in both ELA and science.

Tenaya leads the reported all-grades results in every subject: 40% in ELA, 17% in math and 24% in science, versus 24%, 6% and 12% at Tioga—school-to-school differences of 16, 11 and 12 points. Even so, Tioga’s results are below state rates by 26 points in ELA, 32 in math and 24 in science. Grade-level results show both stronger and weaker spots at Tenaya: grade 6 ELA was 47% versus 48% statewide, and grade 5 science was 40% versus 35%, while grade 4 math was 0% versus 42%. In 11th grade, Tioga was above district results in ELA and math, but remained below state rates. Don Pedro’s test scores are suppressed, so school score comparisons include only the other two schools.

Tenaya improved in all three subjects from 2024–2025 to 2025–2026: ELA rose 15 points, math 7 and science 15; its gaps with the state narrowed by 14, 6 and 12 points, respectively. SchoolDigger placed Tenaya at the 32nd percentile, up from the 8th the year before, while Tioga was at the 19th percentile, down from the 54th in 2022–2023. Attendance is a notable concern at Tioga: chronic absenteeism was 52%, compared with 27% at Don Pedro, 26% at Tenaya and 18% statewide. The schools report similar free/reduced lunch eligible shares for 2024–2025: 54% at Tenaya, 49% at Tioga and 55% at Don Pedro. Student-teacher ratios that year were 13.2, 8.2 and 5.0, respectively.