B
Riverdale Ridge High School
PublicHighGrades 9–12
13380 Yosemite Street, Thornton, CO 80602 · (303) 655-6800 · Part of School District 27J
Students
1,784
Students per teacher
22:1
Free or reduced lunch
39%
Setting
Suburb
Grades
9–12
What stands out about Riverdale Ridge High School
- Math proficiency 9 pts below the state
- Larger classes: 22:1 students per teacher
- Enrollment up 49.3% since 2020
Test scores
EDFacts via Urban Institute Education Data Portal (SY2020-21) · 2020–21Math proficiency22%
State average 30.5%
Reading / language arts50%
State average 47%
Location
Directions ↗
13380 Yosemite Street, Thornton
Students
Enrollment by grade
Grade 9467
Grade 10468
Grade 11450
Grade 12399
Enrollment over time
1,195’20
1,332’21
1,463’22
1,636’23
1,784’24
Up 49.3% since 2020.
Who goes here
Hispanic 45%White 42%Asian 6%Two or more races 5%Black 2%American Indian/Alaska Native <1%
As reported to NCES, share of students with a reported race or ethnicity.
What neighbors say
No ratings yet. Be the first neighbor to rate it.
Parents talk
Conversations in Town Square that mention Riverdale Ridge High School.
Other schools in School District 27J
School facts: U.S. Department of Education (NCES), 2024-2025 school year. Scores: EDFacts via Urban Institute Education Data Portal (SY2020-21). The School Grade is our own summary of state test results. Neighbor ratings are opinions, not an official measure of school quality.