Summary:
Waterville, Washington, is served by two small public schools in the Waterville School District, covering kindergarten through grade 12 and enrolling 256 students altogether. Waterville Elementary serves grades K–5 with 129 students, while Waterville High School serves grades 6–12 with 127 students. The district ranks in the middle of Washington districts, at the 58th percentile with three stars. Because the schools and grade-level classes are small, percentages can change noticeably from year to year when only a few students perform differently.
The high school currently has the stronger academic profile, especially in English language arts (ELA). Its 2025–2026 ELA proficiency rate was 71.43%, well above the district’s 62.2% and the state’s 52.81%, and up substantially from the prior year. Eighth grade was a particular strength, with results above the state in ELA, math, and science. The high school also reported an 85% graduation rate, higher than the statewide 82.6%. However, high school math and science remained below state averages, so math is an important area for continued improvement. At the elementary school, fourth-grade ELA exceeded the state average, but overall ELA was slightly below the state and math was notably weaker. Elementary science also declined sharply from the previous year and is worth monitoring.
Across both schools, math is the clearest shared challenge: proficiency was 35.09% at Waterville Elementary and 37.14% at Waterville High School, compared with 43.11% statewide. The elementary school had a slightly lower student-teacher ratio and higher spending per student, while the high school had stronger overall test results and graduation outcomes. Families should treat suppressed grade-level results as unavailable rather than low scores, and view major year-to-year changes cautiously because of small enrollment. Overall, the high school’s ELA and graduation results are encouraging, while districtwide math and elementary science deserve the closest attention.
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