Summary
Annex Charter School is a small K–8 charter school in Ontario, OR, serving 131 students within Annex School District 29 — far smaller than the nearby Ontario School District 8C schools, which enroll 302–355 students each. In 2025–2026, Annex ranked 310th of 709 Oregon schools, the 56th percentile with 3 stars, a sharp jump from 2024–2025 (535th of 706, 24th percentile, 1 star). Its longer history is volatile, with years at the 2nd, 11th, and 51st percentiles, so the current standing is encouraging but not yet stable.
Annex's all-grade proficiency beats the state in every tested subject: 48.9% in ELA (state 43.8%), 41.3% in math (32.9%), and 36.4% in science (30.6%). It leads Alameda Intermediate School by 9.0 points in ELA, 13.6 in math, and 17.4 in science, and leads Aiken Elementary School by 35.1 points in ELA and 16.8 in math. Third grade is a clear strength (64.3% ELA vs. 41.5% state; 50.0% math vs. 41.3%), and 5th grade math and science are solid. Fourth grade lags, with 30.8% in ELA and 21.4% in math, both below state and below Alameda. Scores for grades 6–8 are suppressed, so upper-grade performance is unknown.
Chronic absenteeism stands out: 10.9% in 2024–2025, about one-third of the state's 33.5% and lower than every nearby school, including May Roberts Primary School (13.5%) and Aiken (14.1%). Per-student spending was $23,527, similar to neighbors, while the student/teacher ratio jumped from 8.7 to 16.3 in one year — worth watching. Free/reduced lunch eligibility was 48.09%, far below the nearby schools' roughly 100% figures, so comparisons may partly reflect different student populations.
Thank you for your feedback!