Banta Unified
River Islands High
16601 Riptide Way, Lathrop, CA 95330
Summary
River Islands High is underperforming.
Reading and math results average to the 62nd percentile among comparable California schools.
56.1% of students met California's reading standard, and it is slowly trending up.
Math is weaker: 29.9% of students met California's math standard, and it is trending down slightly.
Proficiency Stats
| Current Reading Proficiency | 56.1% |
| Current Math Proficiency | 29.9% |
| Reading State Rank | 680/1,596 (57th percentile) |
| Math State Rank | 537/1,596 (66th percentile) |
Other Stats
| Student / Teacher Ratio | 18:1 |
| Student Enrollment | 512 |
| Low-Income Students | 197 (38.5%) |
| English Learners | 35 (6.8%) |
School Website
Great Schools
Niche
Ed-Data
CAASPP2-Year Trends
2025 - 2026
Reading +3.4%•Math -1.9%
•Math -1.9%Showing school-level proficiency for the last three years
Reading Proficiency Scores
Race, economic status, English learner status, and distribution of scores by grade.
Race and Ethnicity
Distribution of Scores by Grade
Low-Income vs Non-Low-Income
Low-Income
Non-Low-Income
Low-Income +2.0%•
•Non-Low-Income +5.9%
English Learners vs English Native
English Learners
English Native
English Learners N/A•
English Native -9.8%
Math Proficiency Scores
Race, economic status, English learner status, and distribution of scores by grade.
Race and Ethnicity
Distribution of Scores by Grade
Low-Income vs Non-Low-Income
Low-Income
Non-Low-Income
Low-Income -4.2%•
•Non-Low-Income +0.6%
English Learners vs English Native
English Learners
English Native
English Learners N/A•
English Native -9.1%
