Benton County · Public school
Prosser High School
Key facts
- Address
- 1500 Paterson Rd., Prosser, WA 99350
- Phone
- (509) 786-1224
- District
- Prosser School District
- County
- Benton County
- Grades
- 9–12 (high)
- Students (2025–26)
- 835
- Students per teacher
- 19.6
- Low-income
- 64%
- English learners
- 20%
- Special education
- 12%
- Setting
- Town
- Spending per student (2024–25)
- $19,048 (Washington $19,341)
Academics vs district and state 2025–26
| Measure | This school | District | State |
|---|---|---|---|
| Reading (ELA) met standard | 61% | 40% | 53% |
| Math met standard | 33% | 34% | 43% |
| Science met standard | 41% | 38% | 51% |
| Regular attendance | 81% | — | 74% |
| 9th graders on track | 57% | — | 73% |
| Dual credit | 73% | — | 70% |
| Graduation rate (4-year) 2024–25 | 94% | — | 83% |
| Experienced teachers 2024–25 | 76% | 71% | 78% |
| Students disciplined 2024–25 | 5.2% | — | 3.7% |
Points are percentage points. What do these numbers mean? Source: OSPI Report Card, data.wa.gov; tests CC BY-ND 4.0, graduation CC BY-NC-ND 3.0 IGO, as published.
Programs
Dual-language and heritage/tribal language programs (2025–26):
- Heritage language: Spanish
Students
Among Washington high schools
Regular attendance81% · Higher than at about 9 in 10 high schools
Low-income students64% · A larger share than at about 8 in 10 high schools
What this means
“About 7 in 10” means 7 of every 10 Washington high schools have a lower number. The band is the middle half of schools and the line is the median (the school in the middle), which is not the state average. These describe who a school serves, not how good it is. What do these numbers mean?
Test results over time
What this means
Each year a different group of students takes the tests, so look for a direction that lasts several years, not one jump. No tests in 2019–20; the 2020–21 tests were shortened and are not shown. What do these numbers mean?
Reading these numbers: test results are the share of tested students who met the state standard; growth is the median student growth percentile (50 = typical); low-income means eligible for free or reduced-price meals. Results describe students as a group, so visit and talk to families too. What do these numbers mean?