Riverside Preparatory
Oro Grande, CA · High School
Riverside Preparatory is a high school in Oro Grande, CA with 2,508 students enrolled and a 32% proficiency rate. Part of Riverside Preparatory District. NCES data from the U.S. Department of Education.
Riverside Preparatory is a high school in Oro Grande, CA that enrolls 2,508 students, putting it among the larger public campuses in the Riverside Preparatory District. That headcount is above the 2,508-student average for schools in the district.
On the latest EDFacts assessments, 32% of students met grade-level proficiency in combined math and reading. EDFacts reports this rate at the district level and each state sets its own cut score, so it reads best as a relative marker rather than a verdict on any one classroom. That tracks the 32% district average closely, within a few points either way. Against the 45% California statewide average, the school sits 13 points lower.
Over the last three reported years the district proficiency rate this school inherits has risen by about 14 points. As a high school, it reports a 77% adjusted-cohort graduation rate, the share of first-time ninth-graders who earn a regular diploma within four years.
The student-teacher ratio is 23.2 to 1, above the U.S. average of roughly 16 to 1. 81% of students qualify for free or reduced-price lunch, indicating a predominantly low-income student body. It is a charter school and receives Title I federal funding, a poverty-based designation rather than a quality marker.
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About This School
Riverside Preparatory is a high school (charter) located in Oro Grande, California. The school serves 2,508 students. The student-to-teacher ratio is 23.2:1.
According to EDFacts assessment data, 32% of students meet grade-level proficiency standards in combined math and reading. The school reports a 77% graduation rate.
81% of students qualify for free or reduced-price lunch, indicating the school serves a predominantly low-income community.
Riverside Preparatory is part of the Riverside Preparatory District in California. The school receives Title I federal funding.
How This School Compares
Riverside Preparatory has 2,508 students enrolled, making it smaller than the average school in Riverside Preparatory District (2,508 students). Its 32% proficiency rate is 0 percentage points above the district average of 32%. Compared to the California state average of 45%, the school performs 13 points lower. The 23.2:1 student-teacher ratio is above the national average of 16:1.
Frequently Asked Questions
Riverside Preparatory has 2,508 students enrolled. The student-to-teacher ratio is 23.2:1.
According to EDFacts data, 32% of students at Riverside Preparatory meet grade-level proficiency standards in combined math and reading assessments.
Riverside Preparatory has a 77% graduation rate, measuring the percentage of students who graduate within four years.
Riverside Preparatory is part of the Riverside Preparatory District in Oro Grande, California. You can view all schools in this district on the district page.
All data on this page comes from the National Center for Education Statistics (NCES) Common Core of Data and EDFacts assessment results. These are official federal datasets published by the U.S. Department of Education.
School profiles are built from NCES directory data and EDFacts assessment results. Proficiency rates reflect combined math and reading performance. Graduation rates are reported for high schools with available data.
Source: NCES Common Core of Data, 2026.