Schools in Zip Code 99323

The 99323 ZIP code has three public schools serving grades K–12: Columbia Elementary (K–5), Columbia Middle School (6–8), and Columbia High School (9–12), with 776 students combined in the Columbia (Walla Walla) School District. More than half of students at each school qualify for free or reduced-price lunch, indicating substantial economic-need considerations across the area.

Columbia Elementary is the strongest-performing school locally, ranking in the 23rd state percentile and exceeding the district in ELA, math, and science. Its 2025–26 proficiency rates were 39.11% in ELA, 28.49% in math, and 35.42% in science, although each remains below the statewide average. Columbia Middle School ranks in the 20th percentile but has shown the most encouraging recent improvement. Science proficiency rose from 23.88% to 42.0%, placing the school above the district and making middle-school science a local bright spot. Its ELA and math results improved only modestly, and math remains a challenge.

Columbia High School is the primary concern for families comparing the schools. It ranks in the 6th percentile, and its 2025–26 proficiency rates were 31.75% in ELA, 7.81% in math, and 27.66% in science. High-school math is especially weak compared with 21.6% at the middle school, 28.49% at the elementary school, and 43.11% statewide. The high school’s ranking has also declined from the 29th percentile to the 6th over three years. Its 79% graduation rate matches the district but trails the state’s 82.6%. Overall, math improvement, high-school support, and maintaining the middle school’s science gains are the clearest priorities.