Summary:
High schools in ZIP code 92377 are represented by one school, Wilmer Amina Carter High, serving grades 9–12 with 1,951 students in Rialto Unified. With no other high schools in the list, families cannot compare schools within the ZIP code. The most important finding is the school’s sharply different subject results: in 2025–26, ELA proficiency was 12 points above the state, while math proficiency was 14 points below it.
By default, Wilmer Amina Carter High is both the highest- and lowest-scoring school in this list; that does not establish how it compares with other area schools. Against the state, the clearest strength is ELA, at 61% proficient versus 49%; math is the clearest weakness, at 24% versus 38%. Science was 38%, 2 points above the state. Completion measures are strong relative to the state: the graduation rate was 98% versus 88%, and the dropout rate was 2% versus 8%. Attendance is a concern by comparison: chronic absenteeism was 23%, above the district’s 22% and the state’s 18%.
Proficiency declined at the school in all three subjects from 2024–25 to 2025–26, while state rates rose: the school fell 8 points in ELA, 3 in math, and 7 in science. Its ELA and science leads over the state narrowed, while its math deficit widened by 4 points. SchoolDigger placed the school at the 75th percentile in 2024–25 and the 62nd percentile in 2025–26, a 13-point drop in relative standing. For additional context, the student–teacher ratio was 22.1 in 2024–25, and 78% of students were free/reduced lunch eligible that year; these figures describe the school, not how it compares with local peers.
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