Summary:
The BASIS Charter Schools Inc. list includes one elementary school, BASIS Phoenix Primary, serving kindergarten through grade 5, with 792 students and a student–teacher ratio of 14.1. Its 2025–26 all-grades proficiency rates are 76% in both English Language Arts (ELA) and mathematics, and its grade 5 science rate was 76% in 2024–25. The most important finding is that the school’s proficiency was above the state rate in every reported subject-and-grade comparison, by 30 to 44 percentage points.
There is no meaningful top-or-bottom school comparison because BASIS Phoenix Primary is the only school represented. Compared with the state, its all-grades ELA proficiency was 76% versus 41% (+35 points), and mathematics was 76% versus 33% (+43 points); grade 5 science was 76% versus 34% (+42 points). Results differ by grade: grade 3 had the highest ELA proficiency at 83%, while grade 5 was lowest at 70%, a 13-point spread. In mathematics, grade 3 was highest at 79% and grade 4 lowest at 71%, an 8-point spread. Even the lower results were above state rates: grade 5 ELA by 32 points and grade 4 mathematics by 31 points.
SchoolDigger’s rankings stayed in the 97th percentile with five stars in each of the three reported years, but the rank did not rise steadily: it was 29 of 912 in 2023–24, 23 of 909 in 2024–25, and 29 of 900 in 2025–26. These rankings do not show whether proficiency scores are improving; the reported ELA and mathematics results are for 2025–26, while science is from 2024–25. The school’s enrollment and ratio describe its size and staffing, but there are no other schools in the list for comparison, and no free/reduced-lunch rate is provided.
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