C−
Thornton High School
PublicHighGrades 9–12
9351 Washington Street, Thornton, CO 80229 · (720) 972-4800 · Part of Adams 12 Five Star Schools
Students
1,439
Students per teacher
16:1
Free or reduced lunch
79%
Setting
Suburb
Grades
9–12
What stands out about Thornton High School
- Math proficiency 25 pts below the state
- Reading / language arts 19 pts below the state
Test scores
EDFacts via Urban Institute Education Data Portal (SY2020-21) · 2020–21Math proficiency6%
State average 30.5%
Reading / language arts28%
State average 47%
Location
Directions ↗
9351 Washington Street, Thornton
Students
Enrollment by grade
Grade 9366
Grade 10370
Grade 11360
Grade 12343
Enrollment over time
1,544’20
1,485’21
1,412’22
1,416’23
1,439’24
Down 6.8% since 2020.
Who goes here
Hispanic 71%White 15%Asian 10%Two or more races 2%Black 2%American Indian/Alaska Native <1%Native Hawaiian/Pacific Islander <1%
As reported to NCES, share of students with a reported race or ethnicity.
What neighbors say
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Parents talk
Conversations in Town Square that mention Thornton High School.
Other schools in Adams 12 Five Star Schools
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.