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Welcome to the Jefferson Junior/Senior High School community. What's one thing that would make Jefferson Junior/Senior High School even better?
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Enrollment
601
High
DISTRICT 847 · STATE 627
SCHOOL COMMUNITY·JEFFERSON COUNTY SCHOOL DISTRICT NO. R-1·NCES 080480000739
Jefferson Junior/Senior High School
2305 PIERCE STREET, EDGEWATER, CO 80214 · (303) 982-6056 · Jefferson County
GRADES 07–12HIGH21-SUBURBTITLE IREGULAR SCHOOL601 STUDENTS
D
allk12 Grade
Scored higher than 8% of Colorado public high schools
- FTest scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- C-Beats expectations How far test scores land above or below what the share of low-income students predicts for a school in this state.
- ·Three-year trend Not available for this school, so the grade uses the other parts.
Grades compare a school only with schools in the same state, because every state gives its own test. How grades work · Top-graded Colorado public high schools
Student : Teacher
13.7:1
44 FTE teachers
DISTRICT 16.9:1 · STATE 16.9:1
Free / Reduced Lunch
79%
473 students
DISTRICT 35% · STATE 50%
Community
6
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Grade 7 | 101 | 17% |
| Grade 8 | 107 | 18% |
| Grade 9 | 104 | 17% |
| Grade 10 | 102 | 17% |
| Grade 11 | 109 | 18% |
| Grade 12 | 78 | 13% |
Student demographics
25%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 52% · STATE 62% · US 70%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Test scores
CMAS 2024-25 . % Met or Exceeded ExpectationsEnglish Language Arts
14.0%
CO avg 44.9% . +6.8pp since 2023
Math
4.6%
CO avg 36.1%
What this means: On the CMAS, Colorado's statewide test, about 14 of every 100 students at this school read and write at grade level and about 5 of 100 do math at grade level. Across all Colorado schools, those numbers are about 45 and 36. Reading and writing scores are up about 7 points since 2023.
CMAS results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 14.0% | 4.6% |
| 2023-24 | 7.2% | N/A |
% Met or Exceeded Expectations, all students and all tested grades.
Source: CMAS. All students, all grades. See all years and grades →
BeatsExpectations
Demographically-adjusted score · methodologyTier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
8.2%
composite math + reading, all grades
Predicted
19.0%
based on CO schools with similar FRL share
Beats by
-10.8pp
below demographic expectation
What this means: About 8% of students here test proficient in math and reading, compared with the roughly 19% typical for Colorado schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among Colorado's top nor bottom 10%.
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →
Schools most like Jefferson Junior/Senior High School
Jefferson Junior/Senior High School's state test result (8.2% proficient) is higher than 1 of the 3 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Jefferson Junior/Senior High School this school | 601 | 78.7% | 8.2% |
| Atlas Preparatory High School COLORADO SPRINGS | 499 | 82.6% | N/A |
| Global Leadership Academy DENVER | 400 | 75.8% | N/A |
| Career Education Center Early College DENVER | 468 | 85.5% | 7.6% |
| East High School PUEBLO | 1,081 | 82.4% | 12.2% |
| KIPP Denver Collegiate High School DENVER | 477 | 88.1% | 10.8% |
Matched among Colorado high schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.
Where Jefferson Junior/Senior High School ranks
Among high schools| Measure | This school | In Colorado | In Jefferson County |
|---|---|---|---|
| State test proficiency ranked highest first | 8.2% | #221 of 231 | #19 of 19 |
| Math proficiency ranked highest first | 4.6% | #51 of 54 | N/A |
| Reading proficiency ranked highest first | 14.0% | #53 of 57 ▲ 1 | N/A |
| Enrollment ranked largest first | 601 | #142 of 409 | #18 of 28 |
| Students per teacher ranked fewest first | 13.7:1 | #38 of 250 | #2 of 21 |
| Diversity index ranked most diverse first | 25.4% | #231 of 250 | #19 of 21 |
| Free and reduced lunch ranked highest share first | 78.7% | #48 of 320 | #1 of 22 |
| Enrollment change since 2017-18 ranked steepest decline first | -11.1% | #82 of 139 | #11 of 16 |
Ranked against other public high schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.
4-year change
SY 2020-21 vs SY 2024-25Enrollment
601
-58 (-9%) vs 2020
-9% since 1990-91, when it was 660
Student : Teacher
13.7:1
was 14.6:1
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 601 | 44 | 13.7:1 | 79% (473) |
| 2023-24 | 594 | 37.3 | 15.9:1 | 82% (486) |
| 2022-23 | 612 | 39.5 | 15.5:1 | 90% (552) |
| 2020-21 | 659 | 45 | 14.6:1 | 88% (582) |
| 2017-18 | 676 | 48.4 | 14.0:1 | 91% (617) |
| 2015-16 | 731 | 57 | 12.8:1 | 88% (640) |
| 2010-11 | 598 | 47 | 12.7:1 | 88% (524) |
| 2000-01 | 739 | 43 | 17.2:1 | 43% (316) |
| 1990-91 | 660 | 38 | 17.4:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Jefferson Junior/Senior High School.
Since 2017-18: students down 11% (676 to 601); teachers down 9% (48.4 to 44).
About Jefferson Junior/Senior High School
In EDGEWATER, Colorado, part of Jefferson County, Jefferson Junior/Senior High School is a high school. Enrollment in 2024-25 was 601 students in grades 7 through 12.
Jefferson County School District No. R-1 operates 148 schools. Combined enrollment is 74,935 students.
The large majority of students at Jefferson Junior/Senior High School, 86%, are Hispanic. The remaining shares are 7% White, 3% Black, and 3% multiracial. Jefferson County as a whole is about 16% Hispanic, so the school's share is higher. The chance that two students picked at random at Jefferson Junior/Senior High School belong to different racial or ethnic groups, known as the diversity index, is 25%.
Dividing enrollment by its 44 full-time-equivalent teachers gives a ratio of about 13.7:1. Among high schools in Colorado, the typical ratio is 16.9:1. Eligible students account for 79% of enrollment in the free or reduced-price lunch program. Public schools in Jefferson County average 32%.
allk12 grades Jefferson Junior/Senior High School a D. The grade compares the school only with Colorado public high schools, because each state gives its own test.
Jefferson Junior/Senior High School posts an average proficiency rate on state tests of 8.2%, compared with a predicted 19.0%. It is not in the top or bottom 10% of Colorado schools on BeatsExpectations.
Jefferson County has these Census figures: median household income is about $110,656, a bachelor's degree or higher is held by about 52% of adults, and the poverty rate is about 4%. The public schools of Jefferson County number 168 and enroll about 74,739.
The nearest public school is Lumberg Elementary School, at about 0.1 miles. Jefferson Junior/Senior High School has at least 8 other public schools within five miles. Jefferson Junior/Senior High School comes in 6th of 7 nearby schools on average proficiency.
The federal government classifies Jefferson Junior/Senior High School's location as Suburb: Large.
From 2020-21 to 2024-25, Jefferson Junior/Senior High School went from 659 students to 601.
Questions about science fairs, picture day, and bus routes can be posted here. Reviews and ratings from people who know the school are welcome.
Jefferson County at a glance
View full county profilePopulation
579,377
Census ACS
Median income
$110,656
Household, ACS
Bachelor's+
52%
Adults 25+
Poverty rate
4%
Below federal line
Schools in county
168
74,739 students
Quick facts
Related schools
Other schools in Jefferson County School District No. R-1
- Arvada West High SchoolHigh · 1,923 students
- Ralston Valley Senior High SchoolHigh · 1,875 students
- Chatfield High SchoolHigh · 1,808 students
- Lakewood High SchoolHigh · 1,735 students
- Columbine High SchoolHigh · 1,710 students
- Golden High SchoolHigh · 1,469 students
Other schools in EDGEWATER
- Lumberg Elementary SchoolElementary · 526 students
- Edgewater Elementary SchoolElementary · 335 students
Other Jefferson Junior/Senior High schools
2 other US public schools in 2 states are named Jefferson Junior/Senior High. Jefferson Junior/Senior High School is the 2nd largest of the 3.
- Jefferson Junior/Senior HighGREELEY, CO · 614 students
- Jefferson Jr./Sr. High SchoolDayton, OH · 128 students
Nearby schools
- Lumberg Elementary School0.1 mi · 526
- Edgewater Elementary School0.8 mi · 335
- Slater Elementary School1.1 mi · 280
- Jefferson County Open Secondary1.3 mi · 315
- Jefferson County Open Elementary School1.3 mi · 236
- Stevens Elementary School1.4 mi · 469
Frequently asked questions
About Jefferson Junior/Senior High SchoolWhat is the total enrollment at Jefferson Junior/Senior High School?
Jefferson Junior/Senior High School enrolls approximately 601 students in grades 07-12.
What age range does Jefferson Junior/Senior High School serve?
Jefferson Junior/Senior High School serves students from grade 07 through grade 12.
What is the student-teacher ratio at Jefferson Junior/Senior High School?
The student-to-teacher ratio at Jefferson Junior/Senior High School is approximately 13.7:1 (44 FTE teachers).
How diverse is Jefferson Junior/Senior High School?
Jefferson Junior/Senior High School reports a student body of 7% White, 86% Hispanic, 3% Black, 0% Asian, 3% Two or more.
Is Jefferson Junior/Senior High School public or private?
Jefferson Junior/Senior High School is a public K-12 school, overseen by Jefferson County School District No. R-1.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.