Summary:
ZIP code 92782 has two K–5 elementary schools, Heritage Elementary and Peters Canyon Elementary, in Tustin Unified. In 2025–26, both schools were well above California proficiency rates in ELA, mathematics and science: their two-school averages were 76% in ELA, 75% in math and 72% in science, compared with state rates of 49%, 38% and 36%. The area’s strongest overall takeaway is that both schools substantially exceed state results, with Peters Canyon leading the all-grade results in all three subjects.
Peters Canyon is the all-grade leader, ahead of Heritage by 2 points in ELA, 3 in math and 9 in science. Heritage is the lower all-grade performer of the two, but its results remain well above the state: its margins were 26 points in ELA, 36 in math and 32 in science. The overall lead does not hold in every grade: Heritage leads grade 4 ELA by 6 points and grade 3 math by 3, while Peters Canyon leads the other four grade-level ELA and math comparisons.
Results rose overall from 2024–25 to 2025–26, though gains varied: the two-school averages increased by 1 point in ELA, 4 in math and 9 in science. Peters Canyon’s science score jumped 16 points, while Heritage’s rose by 1. SchoolDigger rankings also improved over three years, from the 87th to 93rd percentile for Heritage and the 89th to 94th for Peters Canyon. As context—not an explanation of test results—both schools report free/reduced lunch eligible for 2024–25: 33% at Heritage and 31% at Peters Canyon. Student–teacher ratios are 27 at Heritage and 24.1 at Peters Canyon.
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