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Riverdale Ridge High School

13380 Yosemite Street, Thornton, CO 80602

CSchola Grade
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Grades
9–12
High
Students
1,784
Enrolled 2024–25
Students per teacher
21.7 : 1
Full-time teachers
District
School District 27J
Adams County

Schola Grade C · Average

Letter grade (A–F) · compared with 303 Colorado high schools · How we grade
Test scores30% proficient in math & reading
33rdpercentile
Equity15% of low-income students proficient
16thpercentile
Attendance38% chronically absent
40thpercentile
Graduation rate94% graduate in 4 years
76thpercentile
College readinessAt least 27% take AP, IB or dual-enrollment courses
63rdpercentile
Class size21.7 students per teacher
11thpercentile

Percentiles compare this school with other Colorado 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 Riverdale Ridge High School

Riverdale Ridge High School is a public high school in Thornton, Colorado, serving grades 9–12. It is part of School District 27J. The school is located in a large suburb in Adams County.

In the 2024–25 school year, 1,784 students were enrolled, with about 21.7 students for every full-time teacher. That ratio is larger than the typical Colorado high school (15.6 students per teacher). Its Schola Grade is C (average), compared with 303 Colorado high schools.

Grades & enrollment

Students per grade, 2024–25Grades 9–12

Location & nearby schools

13380 Yosemite Street
Thornton, CO 80602
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School details

Type
Public School · What this means
Level
High
Grades offered
9–12
Enrollment (2024–25)
1,784 students
Students per teacher
21.7 to 1
AP courses offered
12
Charter school
No
Magnet school
No
Locale
Suburb — Large
School district
School District 27J
County
Adams County
NCES school ID
080258006738

Schools near Riverdale Ridge High School

All 41 schools in Thornton →

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.