Summary:
Zip code 86033 has one high school, Monument Valley High School, serving grades 9–12 with 618 students in Kayenta Unified School District #27. With no other local high schools in this list, families cannot compare schools within the area; the most useful benchmarks are Arizona results and the school’s own history. The main contrast is that proficiency is well below state levels, while graduation and dropout results compare more favorably.
Monument Valley High School is both the highest- and lowest-performing school in this local list by default. Its strongest comparison is graduation: 91% of students graduated in 2024–25, 11 percentage points above the state’s 80%, while its dropout rate was 2% compared with 5% statewide, a 3-point difference. Test proficiency is the clearest concern: in 2025–26, all-grades ELA proficiency was 15% versus 41% statewide, and math was 12% versus 33%—gaps of 26 and 21 points. Grade 11 results also trailed state levels: ELA was 15% versus 38%, and math was 12% versus 31%. Grade 11 science proficiency was 9% versus 19% statewide in 2024–25.
SchoolDigger’s statewide ranking improved in its latest reported year, but that does not establish that test scores rose: the school moved from the 4th percentile in 2024–25 to the 11th percentile in 2025–26, and its rank improved by 34 places, from 261st to 227th. ELA proficiency is 3 points higher than math, yet math is closer to its state benchmark, with a 21-point gap compared with ELA’s 26-point gap. The student–teacher ratio is 14.7, and no free/reduced-lunch rate is reported. Because comparable proficiency results across multiple years and other local schools are not available, the ranking change should not be treated as proof of improving achievement or as a basis for local school-to-school comparisons.
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