Best High Schools in Zip Code 99138

ZIP code 99138 has one public high school, Inchelium High School, serving grades 9–12 in a small rural community. The school enrolls 62 students and is part of the Inchelium School District. Its small size means students may benefit from a 14.2-to-1 student-teacher ratio, but percentages can change significantly from year to year when only a few students affect the results.

The school’s strongest current academic area is English Language Arts. In 2025–26, 52.94% of students were proficient, nearly identical to the statewide rate of 52.81% and well above the district’s 40.19%. However, ELA performance fell from 70% the previous year, so results should be viewed across several years rather than relying on one class. Math is the clearest ongoing challenge: 29.41% of students were proficient in 2025–26, only slightly above the district’s 28.04% and well below the state’s 43.11%. Science results were suppressed to protect privacy, so the school’s performance in that subject cannot be evaluated from the available data.

For families considering the school, additional context is important. About 79% of students qualified for free or reduced-price lunch, indicating that the school serves many students facing economic challenges. The reported 2023–24 graduation rate was 75%, matching the district but below the later statewide rate of 82.6%; the school’s 2021–22 dropout rate of 41.1% is a significant historical concern, though the figures come from different years. The school ranked in the 42nd percentile in 2025–26, down from the 62nd percentile the year before but well above its 7th-percentile standing in 2022–23. Overall, the data show a small school with relative strength in literacy, persistent math needs, and completion outcomes that deserve closer attention.