Best High Schools in Zip Code 99320

ZIP code 99320, which includes Benton City, Washington, has one high school: Kiona-Benton City High School, serving grades 9–12 with about 435 students in the Kiona-Benton City community.

Kiona-Benton City High School has a mixed performance profile. Its strongest results are in English language arts and science when compared with the Kiona-Benton City School District. In 2025–2026, 39.36% of students met the ELA standard, compared with 20.06% districtwide, while science proficiency was 30.1%, compared with 24.1% for the district. ELA also improved by about 4.5 percentage points from the prior year. However, the school remained below Washington averages in all three tested subjects. Math is the biggest concern: only 12.36% of students met the standard, nearly identical to the district’s 12.46% and far below the state rate of 43.11%.

For families considering this school, the graduation rate was 77.4% in 2024–2025, below Washington’s 82.6%, while the dropout rate was 9.9%, nearly the same as the state rate. Science proficiency declined from 36% to 30.1% year over year, so that subject deserves monitoring even though it remains stronger than the district overall. The school’s statewide ranking improved from the 6th percentile in 2023–2024 to the 12th percentile in 2025–2026, indicating positive movement but continued placement among lower-ranked schools statewide. The school reports a 19.7-to-1 student-teacher ratio, $18,225 in per-student spending, and 13.33% free- or reduced-price lunch participation. Parents may want to ask about math intervention, credit recovery, attendance support, and plans to sustain ELA gains while addressing the science decline.