Summary:
ZIP code 84325 has one public school, Mountainside School, an elementary school serving prekindergarten through sixth grade in Mendon. The school enrolls 514 students and is part of the Cache District. Mountainside is an above-average school overall, ranking 16th out of 92 schools in its district and 107th out of 563 statewide in 2025–2026. Those rankings place it around the 80th percentile, although its statewide position declined from the 92nd percentile the year before.
Academic results are generally stronger than Utah averages, especially in mathematics and science. Average proficiency across tested grades was about 64% in math and 68% in science, compared with roughly 46% and 52% statewide. Sixth grade is the school’s clearest strength: 73% of students were proficient in English language arts, 63% in math, and 85% in science. Third-grade ELA and math results were also solid. The main area needing attention is fourth grade, where performance was below district averages in all three subjects, including ELA proficiency of 43%. Fifth-grade math and science also declined notably from the prior year.
For families considering Mountainside School, the overall picture is positive but varied by grade. The school offers strong statewide performance, a four-star rating, and particularly impressive sixth-grade outcomes. At the same time, average math proficiency fell about 2.5 percentage points and science fell about 5.8 points year over year, contributing to the lower ranking. Chronic absenteeism was 19.7% in 2024–2025—better than Utah’s 23.8% rate but higher than the Cache District average of 16.3%. Parents may want to ask about plans for fourth-grade literacy and science, fifth-grade academic recovery, and attendance support.
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