Summary:
Colton Joint Unified has 27 schools, spanning elementary through high school and including middle, continuation, and alternative schools. The area’s results vary by school level: elementary schools average 34% in ELA, 23% in math, and 20% in science; middle schools average 27%, 16%, and 13%, respectively. The three comprehensive high schools average 49% in ELA, 19% in math, and 28% in science. Compared with state results, the high-school ELA average is about level, but math is the clearest shared weakness: the comprehensive high schools average 19% proficient, versus 38% statewide.
Several schools stand out, but performance differs widely even within the same level. Among elementary schools, Ruth Grimes Elementary leads ELA at 49%, while Terrace View Elementary leads math at 34% and Sycamore Hills Elementary leads science at 37%; Alice Birney Elementary is lowest in all three, at 22%, 13%, and 10%. In middle school, Terrace Hills Middle leads ELA and science, and Joe Baca leads math. Among comprehensive high schools, Grand Terrace High School at the Ray Abril Junior Edal Complex leads ELA and math, while Colton High leads science; Bloomington High is lowest among those three in each subject. Grand Terrace’s ELA score is 34 points higher than Bloomington’s.
Recent changes are mixed: elementary ELA rose about 1 point per school on average, math was essentially flat, and science rose 3 points. Middle-school ELA and math rose about 2 and 3 points on average, while science was nearly unchanged; comprehensive-high averages fell about 1 point in ELA, were flat in math, and rose 4 points in science. Grand Terrace was a bright spot, gaining 6 points in ELA and 4 in math. SchoolDigger places the district at the 17th percentile statewide, with one star. School context varies too: in school year 2024–2025, free/reduced lunch-eligible shares were 59% at Terrace View, 86% at Ruth Grimes, and 91% at Alice Birney, despite their differing results; these figures are context, not an explanation. Comprehensive high-school graduation rates were all above the state’s 88%: 98% at Bloomington, 97% at Grand Terrace, and 94% at Colton. All-grades results combine different grades, and the continuation school is not a like-for-like comparison with comprehensive high schools.
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