Summary:
Altus has two high schools serving grades 9–12: Altus High School (975 students) and Navajo High School (119 students). Their 2025–2026 results show different strengths: the schools’ average proficiency is above Oklahoma’s in English language arts (ELA), but below it in math, science and U.S. History. Across the four subjects, their average is 24%, compared with 31% statewide—a 7-point shortfall. The clearest shared academic concern is science, where the schools average 13% proficient against 30% statewide.
Altus High School leads in three of the four subjects: its ELA result is 36% versus 24% at Navajo High School, math is 20% versus 14%, and U.S. History is 41% versus 28%. Altus matches the state in U.S. History and is 10 points above the state in ELA, though it is below the state in math and science. Navajo’s standout subject is science, at 17% compared with Altus’s 9%; both schools are below the 30% state rate. Navajo is also stronger on graduation and attendance: its 2024–2025 graduation rate is 97%, versus 88% at Altus and 78% statewide. Chronic absenteeism in 2025–2026 is 8% at Navajo and 15% at Altus, compared with 16% statewide.
Results declined overall, especially at Navajo. From 2024–2025 to 2025–2026, the two-school average across the four subjects fell 6 points, while Navajo’s own average fell 11 points; its ELA result dropped 21 points, from 45% to 24%, while Altus remained at 36%. SchoolDigger’s statewide percentile rank for Navajo fell from 75th in 2023–2024 to 33rd in 2025–2026; Altus moved from 72nd to 57th, with a slight rise from 56th in 2024–2025. Altus has a higher student-teacher ratio (20.4 versus 16.6). For 2024–2025, free/reduced lunch eligible shares were 52% at Altus and 47% at Navajo; these are contextual differences, not explanations for results. Because Navajo is much smaller, the two-school averages are not enrollment-weighted.
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