Summary:
The Montessori Day Public Schools Chartered Inc. list covers one K–8 school, Montessori Day Public Schools Chartered – Mountainside, with 177 students. Its 2025–26 all-grades results are above Arizona’s state averages in both English language arts and math, and its reported fifth-grade science result is also higher. The clearest standout is fifth-grade science: 63% proficient, 29 percentage points above the state.
There is no meaningful top-to-bottom comparison among schools because this area’s list contains only one; the Mountainside school is the sole observed school. In 2025–26, its all-grades ELA proficiency was 56%, compared with 41% statewide, while math was 37%, compared with 33%. ELA results vary across the disclosed grades: grade 3 was 62% versus 39% statewide, grade 4 was 50% versus 47%, and grade 6 was 65% versus 41%. These figures show stronger state-relative results in ELA than in math, but the advantage is smaller in grade 4 than in grades 3 and 6. The science result is for fifth grade in 2024–25, so it is a separate grade and year from the all-grades results.
SchoolDigger’s latest ranking is lower than its prior listing: the school was 211th of 900 schools, in the 77th percentile with four stars, in 2025–26, compared with 69th of 909, in the 92nd percentile with five stars, in 2024–25. Its 2023–24 listing was 112th of 912 and in the 88th percentile, with four stars. The student–teacher ratio is 17.7, and no free/reduced-lunch percentage is reported. The lower SchoolDigger ranking is a change in relative standing; the supplied all-grades proficiency results do not establish a year-to-year score trend.
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