Summary:
ZIP code 92618 has nine school entries serving 10,101 students: six elementary schools, one high school and two K–12 alternative entries, both named Excel Academy Charter. The schools include campuses in Irvine Unified and two separate Excel Academy Charter entries; I distinguish the latter by enrollment. Across the nine entries, average proficiency was about 70% in ELA, 64% in math and 61% in science, compared with state figures of 49%, 38% and 36%. Most importantly, every school was above the state figure in all three subjects, but results varied considerably from school to school.
Beacon Park had the highest all-grades ELA result at 78%, while Portola Springs Elementary led math at 74%, effectively tied with Beacon Park at 74%. Loma Ridge Elementary led science at 70%. At the other end, Oak Creek Elementary was lowest in all three subjects, at 59% in ELA, 52% in math and 46% in science. The leaders outscored Oak Creek by 19 points in ELA, 22 in math and 24 in science. Although Oak Creek remains above state figures, it is the clearest low-performing outlier in this group.
Recent changes were mixed: the nine-school average rose by about 1 point in ELA, was nearly unchanged in math and increased by 4 points in science from 2024–2025 to 2025–2026. Excel Academy Charter (660 students) improved most, gaining 7 points in ELA, 5 in math and 5 in science, while Oak Creek fell 5 points in math and 4 in science. SchoolDigger’s latest percentiles also put Portola Springs at the strongest listed ranking, the 93rd percentile, and Oak Creek at the weakest, the 75th; Oak Creek had been at the 80th percentile in 2023–2024. Similar school size and ratios do not guarantee similar results: Portola Springs and Oak Creek both serve K–6, enroll about 950 students and have student-teacher ratios of 30.1 and 30.0, yet Portola Springs leads by 17 points in ELA, 22 in math and 24 in science. Their free/reduced lunch eligible shares were 15% and 29%, respectively, in 2024–2025; these are contextual differences, not explanations for results. All-grades results combine different grade spans, so comparisons are broad rather than matched by grade.
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