Summary
Mary Deterding Elementary serves 670 students in grades K–6 in Carmichael, alongside nearby schools in the San Juan and Folsom-Cordova areas. Its strongest finding is broad academic performance: in 2025–26, it ranked second among eight nearby schools with scores in English language arts (ELA), math and science, and scored above state and district averages in all three subjects.
Mary’s advantage holds across subjects: proficiency was 64% in ELA, 54% in math and 49% in science, compared with state rates of 49%, 38% and 36%, respectively. It trailed only Riverview STEM Elementary locally, which scored 80% in ELA, 75% in math and 75% in science. Sixth grade is the clearest weak spot within Mary: math proficiency was 32%, below the state’s 37% and well below Mary’s 48% in fifth grade and about 64%–65% in third and fourth. Sixth-grade ELA was stronger at 53%, above the state’s 48%, though below Mary’s rates in grades three through five.
Results over time are mixed: science fell by 9 percentage points from 2022–23 to 2025–26, and math declined by 1 point, while ELA rose by 2 points; Mary nevertheless stayed above state averages, though its science lead narrowed from 28 to 13 points. SchoolDigger gives Mary 4 stars and a 79th-percentile statewide rank for 2025–26, second among nearby schools with rankings. Its student-teacher ratio is relatively high at 26.8, and 51% of students were free/reduced lunch eligible in 2024–25, below the nearby-school median of 63%—context, not an explanation for achievement. SchoolDigger’s effectiveness ranking is notably higher for Special Education Students, at the 97th percentile, than Mary’s overall rank; its ranking for Asian Students is 23rd percentile. Chronic absenteeism has also improved, falling from 27% in 2021–22 to 14% in 2025–26, below both San Juan Unified at 21% and the state at 18%.
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