Schools in Zip Code 93427

Zip code 93427 has two schools serving kindergarten through grade 8: Oak Valley Elementary (377 students, grades K–5) and Jonata Middle (168 students, grades 6–8), both in the Buellton Union Elementary district. In 2025–2026, their two-school average was above the state in English language arts (ELA), math, and science, but the results differ considerably between schools—especially in math.

Jonata stands out in ELA, with 64% proficiency compared with 57% at Oak Valley; both were above the state’s 49%. Oak Valley leads in math, at 50% versus 38% at Jonata, and in science, at 39% versus 34%. Oak Valley was above the state in both subjects; Jonata was just below in math and science. Jonata’s math results also vary by grade: they were below state results in grades 6 and 7, but above in grade 8.

Both schools improved in ELA from 2024–2025 to 2025–2026, gaining about 5 percentage points each, while math and science fell at both schools. SchoolDigger’s percentile rankings reached 71 for both in 2025–2026: Oak Valley rose from 46 in 2023–2024, while Jonata declined from 80. Other reported measures offer context, not an explanation for the test results: in 2024–2025, free/reduced lunch eligible students made up 57% at Oak Valley and 55% at Jonata, and student-teacher ratios were 20.9 and 20.0, respectively. In 2025–2026, chronic absenteeism was lower at Jonata (10%) than at Oak Valley (15%), compared with 13% for the district and 18% statewide.