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Kelso High School

1904 Allen St, Kelso, WA 98626

CSchola Grade
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Grades
9–12
High
Students
1,390
Enrolled 2024–25
Students per teacher
18.8 : 1
Full-time teachers
District
Kelso School District
Cowlitz County

Schola Grade C · Average

Letter grade (A–F) · compared with 338 Washington high schools · How we grade
Test scores48% proficient in math & reading
50thpercentile
Equity40% of low-income students proficient
56thpercentile
Attendance50% chronically absent
21stpercentile
Graduation rate91% graduate in 4 years
50thpercentile
College readinessAt least 39% take AP, IB or dual-enrollment courses
61stpercentile
Class size18.8 students per teacher
65thpercentile

Percentiles compare this school with other Washington high schools; the line marks the middle. Data: test scores 2021–22, graduation and absenteeism 2022–23 (U.S. Department of Education, EDFacts); coursework 2023–24 (Civil Rights Data Collection); staffing 2024–25 (NCES).

About Kelso High School

Kelso High School is a public high school in Kelso, Washington, serving grades 9–12. It is part of Kelso School District. The school is located in a small city in Cowlitz County.

In the 2024–25 school year, 1,390 students were enrolled, with about 18.8 students for every full-time teacher. That ratio is close to the typical Washington high school (19.2 students per teacher). Its Schola Grade is C (average), compared with 338 Washington high schools.

Grades & enrollment

Students per grade, 2024–25Grades 9–12

Location & nearby schools

1904 Allen St
Kelso, WA 98626
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School details

Type
Public School · What this means
Level
High
Grades offered
9–12
Enrollment (2024–25)
1,390 students
Students per teacher
18.8 to 1
AP courses offered
5
Charter school
No
Magnet school
No
Virtual learning
Offers virtual courses
Locale
City — Small
School district
Kelso School District
County
Cowlitz County
NCES school ID
530000300593

Schools near Kelso High School

All 14 schools in Kelso →

School data comes from the U.S. Department of Education: the National Center for Education Statistics (NCES) Common Core of Data and EDGE school locations (2024–25) and Private School Survey (2023–24), the Civil Rights Data Collection (2023–24), and EDFacts (test results 2021–22; graduation and chronic absenteeism 2022–23), plus other public sources. Please contact the school to confirm enrollment, programs, and other details. How we source data.