BASIS Charter Schools Inc.

BASIS Charter Schools Inc. has one elementary school, BASIS Peoria Primary, serving grades K–4 in the Peoria area and enrolling 696 students. Its 2025–2026 results are far above Arizona’s in both tested subjects: 83% of students were proficient in English language arts (ELA), compared with 41% statewide, and 86% in mathematics, compared with 33% statewide. The most important finding is that the school leads the state by 42 percentage points in ELA and 53 points in mathematics.

BASIS Peoria Primary is the area’s only school, so there is no local top-to-bottom comparison; its results stand out against the state in every reported grade and subject. In grade 3, proficiency was 85% in ELA and 92% in mathematics, leading state results by 46 and 54 points. In grade 4, the school’s 82% proficiency in both subjects was 35 points above the state in ELA and 42 points above it in mathematics. SchoolDigger also rates the school five stars and ranks it third of 267 in its district ranking, in the 99th percentile.

Grade 4 results are lower than grade 3 results at the school, especially in mathematics: ELA falls 3 points, from 85% to 82%, while mathematics falls 10 points, from 92% to 82%. SchoolDigger’s statewide ranking improved from 25 of 909 in 2024–2025 to 8 of 900 in 2025–2026, after ranking 6 of 912 in 2023–2024; these rankings do not show a proficiency-score trend. The school’s student–teacher ratio was 16.5 in 2024–2025, and its free/reduced-lunch rate is not reported. Because the list covers only one school and one year of proficiency results, it cannot show differences among local schools or changes in proficiency over time.