Best Public Schools in Zip Code 93660

ZIP code 93660 has five schools in Golden Plains Unified: four K–8 elementary schools and one high school serving grades 9–12. The elementary schools’ average 2025–26 proficiency was 31% in ELA, 23% in math and 12% in science among the schools with reported science results, below state rates of 49%, 38% and 36%, respectively. The clearest standout is Helm Elementary, whose 56% ELA rate leads the other elementary schools by a wide margin and exceeds the state rate.

Helm also leads elementary math at 30%, though it is still 8 points below the state. Cantua Elementary is next in all-grades ELA at 25% and math at 25%, and its grade 8 ELA is the only reported elementary grade-level result above the state: 50% versus 49%. Among schools with reported science results, San Joaquin Elementary leads at 16%, followed by Cantua at 13% and Tranquillity Elementary at 8%; Tranquillity Elementary also has the lowest elementary math result, 16%. Tranquillity High has 40% all-grades ELA, above its district’s 26% but below the state’s 49%; its grade 11 math result, 31%, is close to the state’s 32%. Its graduation rate is 99%, compared with 88% statewide, while chronic absenteeism is 29% versus 18% statewide.

Recent changes are mixed. Helm’s ELA rose 16 percentage points from 2024–25 to 2025–26, while the other three elementary schools’ average fell by 2 points; elementary math rose by 5 points on average. Tranquillity High math increased 18 points and science 8, but ELA fell 9 points. SchoolDigger’s statewide percentile rank for the high school rose from the 19th percentile in 2023–24 to the 42nd in 2025–26. Context also differs by school: Helm has 60 students and an 11.7 student–teacher ratio; for 2024–25, free/reduced lunch eligible was 93% at Helm, 96% at San Joaquin and 88% at Tranquillity Elementary, while Cantua and Tranquillity High reported 67% and 54% directly certified for free meals, respectively. These are contextual observations, not explanations of results; Helm’s science score is suppressed, and the high school serves different grades from the K–8 schools.