Average
#889 of 1,815 schools in CO
Top 49% in state
Riverdale Ridge High School
High School · School District 27J
13380 YOSEMITE STREET, Thornton, CO 80602
Enrollment
1,636
Student-Teacher
21.2:1
Score
6.3
Grades
9th – 12th
Enrollment
1,636
Student-Teacher
21.2:1
Score
6.3
Grades
9th – 12th
Data vintage
2022-23
Data vintage2022-23
How this school compares
Colorado schools
#889 of 1,815
In Thornton
#9 of 39
public schools
In district
#6 of 31
School District 27J
Academic growth
9.1 / 10
Excellent
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Riverdale Ridge High School
High School in Thornton · grades 9th – 12th. Start here, then compare fit against nearby and district options.
Rodger Quist Middle School
0.2 mi away. Use as a geographic alternative in the same move search.
Brantner Elementary School
0.8 mi away. Use as a geographic alternative in the same move search.
About Riverdale Ridge High School
Riverdale Ridge High School is a public high school in Thornton, CO, part of School District 27J. Riverdale Ridge High School serves approximately 1,636 students, and covers grades 9th-12th, and has a 21.2:1 student-teacher ratio. Riverdale Ridge High School has a current MySchoolScout rating of 6.3 out of 10 and ranks #889 of 1,815 schools in CO.
Structured state assessment records for Riverdale Ridge High School show 20% math proficiency (multi-year average, 2020-2022) and 50% reading/ELA proficiency (multi-year average, 2020-2021).
- This school 6.3 · Average
- District avg 5.5
- CO avg 6.5
What Parents Should Know
Riverdale Ridge High School runs 21.2:1 students to teachers, above the national average. That often means bigger classes. Ask how the school supports kids who need extra help, and whether there are teaching assistants or small-group time.
34% of students at Riverdale Ridge High School were chronically absent in the 2022-23 school year, above the national average. Chronic absenteeism means missing 15 or more school days, and at high rates it drags on classroom pacing for everyone. Ask what the school does to help families get kids to class consistently.
Score Breakdown
Full Profile · 4/4 metricsView breakdown
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Riverdale Ridge High School — Students at Riverdale Ridge High School score 34% proficient, which is below what's typical for similar communities (expected: 42%).
Equity & Diversity
Shown separately, not included in overall scoreFree/Reduced Lunch
39.4%
Students qualifying for federal meal assistance
Test Scores CO EDFACTS (2021-22)
Based on 5 test records from CO state assessments. About our data
Proficiency Trend
↓ DecliningAverage proficiency (% at or above grade level) across Math & ELA over time.
* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.
Source: EdFacts (NCES) and state assessment data. Growth score: 9.1/10.
How Riverdale Ridge High School Compares
See how Riverdale Ridge High School performs across key quality dimensions compared to state benchmarks.
Funding & Resources
Programs & Offerings
Data as of 2021-22 · Source: CRDC via Urban Institute · Learn more
Location
13380 YOSEMITE STREET, Thornton, CO 80602
Nearby Alternatives
Families considering Riverdale Ridge High School may also want to explore other high schools in the area. Horizon High School (rated 7.2/10, 2.3 miles away, in nearby Brighton), which scores slightly higher. Additionally, Prairie View High School (rated 5.1/10, 2.8 miles away, in nearby Henderson), a more accessible option. For more schools in Thornton, see our Thornton schools guide .
Nearby Schools
20 within 3.4 mi| School | Distance | Rating |
|---|---|---|
| Rodger Quist Middle School Thornton | 0.2 mi | 6.2 |
| Brantner Elementary School Thornton | 0.8 mi | 7.3 |
| West Ridge Elementary Thornton | 1.6 mi | 6.6 |
| Henderson Elementary School Henderson | 2.3 mi | 4.0 |
| Glacier Peak Elementary School Brighton | 2.5 mi | 3.3 |
| Horizon High School Brighton | 2.3 mi | 7.2 |
| Bright Horizons Preschool Thornton | 2.3 mi | 3.5 |
| Shadow Ridge Middle School Thornton | 2.5 mi | 3.3 |
| John W Thimmig Elementary School Henderson | 3.0 mi | 4.0 |
| Prairie View High School Henderson | 2.8 mi | 5.1 |
| Belle Creek Charter School Henderson | 3.4 mi | 3.2 |
| Eagleview Elementary School Thornton | 2.7 mi | 6.3 |
| ELMWOOD BAPTIST ACADEMY Brighton | 2.8 mi | 7.7 |
| Skyview Elementary School Thornton | 2.9 mi | 5.2 |
| Prairie View Middle School Henderson | 3.1 mi | 4.1 |
| LORD OF LIFE LUTHERAN SCHOOL Thornton | 3.3 mi | 4.3 |
| FRASSATI CATHOLIC ACADEMY Thornton | 3.2 mi | 6.9 |
| Cherry Drive Elementary School Thornton | 3.6 mi | 5.1 |
| Prairie Hills Elementary School Thornton | 3.3 mi | 6.9 |
| Stellar Elementary School Thornton | 3.4 mi | 5.8 |
Neighborhood Census ACS (2019-2023)
Census data for ZIP 80602 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$146,679
Median Home Value
$639,300
Median Rent
$2,574/mo
Population
42,237
College Educated
43.9%
Homeownership
92.2%
Avg Commute
32 min
Poverty Rate
3.7%
Median Age
38.4
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| Coronado High School Colorado Springs, CO | 6.3 |
| Northridge High School Greeley, CO | 6.3 |
| Overland High School Aurora, CO | 6.3 |
| Mountain Range High School Westminster, CO | 6.2 |
| East High School Pueblo, CO | 6.4 |
| Greeley West High School Greeley, CO | 6.4 |
Frequently Asked Questions
Common questions about Riverdale Ridge High School
What grades does Riverdale Ridge High School serve?
Riverdale Ridge High School serves students in grades 9th through 12th.
How many students attend Riverdale Ridge High School?
Riverdale Ridge High School has an enrollment of approximately 1,636 students.
What is the student-teacher ratio at Riverdale Ridge High School?
The student-teacher ratio at Riverdale Ridge High School is 21.2:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does Riverdale Ridge High School rank in CO?
Riverdale Ridge High School ranks #889 of 1,815 schools in CO.
What is Riverdale Ridge High School's MySchoolScout rating?
Riverdale Ridge High School has a current MySchoolScout rating of 6.3 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.
What are the test scores at Riverdale Ridge High School?
Based on loaded state assessment records, Riverdale Ridge High School has 20% math proficiency (multi-year average, 2020-2022) and 50% reading/ELA proficiency (multi-year average, 2020-2021).
Is Riverdale Ridge High School a charter school?
No, Riverdale Ridge High School is not a charter school. It is a traditional public school operated by the local school district.
Is Riverdale Ridge High School a Title I school?
No, Riverdale Ridge High School is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for Riverdale Ridge High School?
39.4% of students at Riverdale Ridge High School qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.
Neighborhood Context
Powered by 
Quick Facts NCES CCD (SY 2022-23)
- Grades
- 9th – 12th
- Enrollment
- 1,636
- Student-Teacher Ratio
- 21.2:1
- Teachers (FTE)
- 77
- Free/Reduced Lunch
- 39.4%
- Type
- regular
- Setting
- Large Suburb
- County
- Adams County
- Chronic Absenteeism (SY 2022-23)
- 33.9%
- Phone
- (303) 655-6800
- 4-Year Graduation
- 92.0%
Resources & Links
District
School District 27J- District Enrollment
- 23,139
- Schools in District
- 33
- Per-Pupil Spending
- $10,854
- District Rank
- #6 of 31
Other Schools in This District
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