The Dalles High School, formerly The Dalles Wahtonka High School is a public high school located in The Dalles, Oregon, United States. It houses students from both The Dalles and the adjacent town of Mosier.
Serving 795 students in grades 9-12, The Dalles High School ranks in the bottom 50% of all schools in Oregon for overall test scores (math proficiency is bottom 50%, and reading proficiency is bottom 50%).
The percentage of students achieving proficiency in math is 15-19% (which is lower than the Oregon state average of 31%). The percentage of students achieving proficiency in reading/language arts is 45-49% (which is higher than the Oregon state average of 44%).
The student-teacher ratio of 20:1 is higher than the Oregon state level of 17:1.
Minority enrollment is 58% of the student body (majority Hispanic), which is higher than the Oregon state average of 43% (majority Hispanic).
Quick Facts (2026)
- Grades: 9-12
- Enrollment: 795 students
- Student-Teacher Ratio: 20:1
- Minority Enrollment: 58%
- Graduation Rate: 80-84% (Top 50% in OR)
- Overall Testing Rank: Bottom 50%
- Math Proficiency: 15-19% (Btm 50%)
- Reading Proficiency: 45-49% (Top 50%)
- Science Proficiency: 35-39% (Top 30%)
- Source: National Center for Education Statistics (NCES), OR Dept. of Education
Top Rankings
The Dalles High School ranks among the top 20% of public schools in Oregon for:
Category
Attribute
Percent Eligible For Free Lunch
School Overview
The Dalles High School's student population of 795 students has stayed relatively flat over five school years.
The teacher population of 40 teachers has stayed relatively flat over five school years.
Grades Offered
Grades 9-12
(Supplemental Virtual)
(Supplemental Virtual)
Total Students
795 students
Total Classroom Teachers
40 teachers
Year Founded
1905
Last Day of School
Fri. Jun 12, 2026
School Motto
“Educating each student to the highest standards while motivating them to reach their fullest potential and graduating them to be college, career and life ready.”
School Rankings
The Dalles High School ranks within the bottom 50% of all 1,174 schools in Oregon (based off of combined math and reading proficiency testing data).
The diversity score of The Dalles High School is 0.61, which is more than the diversity score at state average of 0.60. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#715 out of 1174 schools
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
15-19%
31%
Reading/Language Arts Test Scores (% Proficient)
45-49%
44%
Science Test Scores (% Proficient)
35-39%
30%
Student-Teacher Ratio
20:1
17:1
American Indian
2%
1%
Asian
1%
4%
Hispanic
47%
26%
Black
2%
3%
White
42%
57%
Hawaiian
1%
1%
Two or more races
5%
8%
All Ethnic Groups
Graduation Rate
80-84%
81%
Eligible for Free Lunch
99%
67%
Eligible for Reduced Lunch (21-22)
4%
8%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), OR Dept. of Education
School Notes
- School Mascot: Riverhawk
Frequently Asked Questions
What is The Dalles High School's ranking?
The Dalles High School is ranked #715 out of 1,174 schools, which ranks it among the bottom 50% of public schools in Oregon.
What percent of students have achieved state testing proficiency in math and reading?
15-19% of students have achieved math proficiency (compared to the 31% OR state average), while 45-49% of students have achieved reading proficiency (compared to the 44% OR state average).
What is the graduation rate of The Dalles High School?
The graduation rate of The Dalles High School is 80-84%, which is lower than the Oregon state average of 81%.
How many students attend The Dalles High School?
795 students attend The Dalles High School.
What is the racial composition of the student body?
47% of The Dalles High School students are Hispanic, 42% of students are White, 5% of students are Two or more races, 2% of students are American Indian, 2% of students are Black, 1% of students are Asian, and 1% of students are Hawaiian.
What is the student-teacher ratio of The Dalles High School?
The Dalles High School has a student ration of 20:1, which is higher than the Oregon state average of 17:1.
What grades does The Dalles High School offer ?
The Dalles High School offers enrollment in grades 9-12 (Supplemental Virtual).
What school district is The Dalles High School part of?
The Dalles High School is part of North Wasco County SD 21 School District.
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