Enrollment
344
High
DISTRICT 997 · STATE 627
SCHOOL COMMUNITY·ST. VRAIN VALLEY SCHOOL DISTRICT NO. RE1J·NCES 080537000912
Lyons Middle/Senior High School
100 MCCONNELL DRIVE, LYONS, CO 80540 · (303) 823-6631 · Boulder County
GRADES 06–12HIGH42-RURALREGULAR SCHOOL344 STUDENTS
Student : Teacher
14.4:1
24 FTE teachers
DISTRICT 17.9:1 · STATE 16.9:1
Free / Reduced Lunch
26%
90 students
DISTRICT 39% · STATE 50%
Community
0
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 6 | 60 | 17% |
| Grade 7 | 48 | 14% |
| Grade 8 | 59 | 17% |
| Grade 9 | 43 | 13% |
| Grade 10 | 46 | 13% |
| Grade 11 | 45 | 13% |
| Grade 12 | 43 | 13% |
Student demographics
26%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 55% · 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
QUIET COMMUNITY
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START A DISCUSSIONTest scores
CMAS 2024-25 . % Met or Exceeded ExpectationsEnglish Language Arts
76.8%
CO avg 44.9% . +1.1pp since 2023
Math
55.6%
CO avg 36.1% . +4.3pp since 2023
What this means: On the CMAS, Colorado's statewide test, about 77 of every 100 students at this school read and write at grade level and about 56 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 1 points since 2023, while math scores are up about 4 points.
CMAS results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 76.8% | 55.6% |
| 2023-24 | 75.7% | 51.3% |
% 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
OUTPERFORMING
Top 10% of CO schools after controlling for student poverty
Actual proficiency
65.0%
composite math + reading, all grades
Predicted
50.9%
based on CO schools with similar FRL share
Beats by
+14.2pp
above demographic expectation
What this means: About 65% of students here test proficient in math and reading, well above the roughly 51% typical for Colorado schools with a similar share of low-income students. BeatsExpectations ranks schools against others at the same poverty level, not by raw scores, so a school can post high scores and still fall short of its prediction, or post lower scores and still beat it. This school clears its prediction by about 14 points, placing it in Colorado's top 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 Lyons Middle/Senior High School
Lyons Middle/Senior High School's state test result (65.0% proficient) is higher than 3 of the 3 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Lyons Middle/Senior High School this school | 344 | 26.2% | 65.0% |
| Animas High School DURANGO | 249 | 26.5% | 31.1% |
| Salida High School SALIDA | 409 | 29.1% | N/A |
| Middle Park High School GRANBY | 413 | 27.4% | 31.4% |
| Telluride High School TELLURIDE | 298 | 30.9% | 49.8% |
| Peyton Senior High School PEYTON | 197 | 25.9% | N/A |
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 Lyons Middle/Senior High School ranks
Among high schools| Measure | This school | In Colorado | In Boulder County |
|---|---|---|---|
| State test proficiency ranked highest first | 65.0% | #4 of 231 | #2 of 11 |
| Math proficiency ranked highest first | 55.6% | #6 of 54 no change | N/A |
| Reading proficiency ranked highest first | 76.8% | #2 of 57 ▲ 1 | N/A |
| Enrollment ranked largest first | 344 | #199 of 409 | #9 of 15 |
| Students per teacher ranked fewest first | 14.4:1 | #55 of 250 | #2 of 11 |
| Diversity index ranked most diverse first | 25.9% | #230 of 250 | #10 of 11 |
| Free and reduced lunch ranked highest share first | 26.2% | #266 of 320 | #10 of 13 |
| Enrollment change since 2017-18 ranked steepest decline first | -17.5% | #50 of 139 | #2 of 8 |
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
344
-54 (-14%) vs 2020
+48% since 1990-91, when it was 233
Student : Teacher
14.4:1
was 16.6:1
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 | 344 | 23.9 | 14.4:1 | 26% (90) |
| 2023-24 | 352 | 24.3 | 14.5:1 | 18% (64) |
| 2022-23 | 372 | 23.6 | 15.8:1 | 19% (70) |
| 2020-21 | 398 | 24 | 16.6:1 | 16% (64) |
| 2017-18 | 417 | 24.1 | 17.3:1 | 13% (54) |
| 2015-16 | 399 | 23 | 17.4:1 | 16% (63) |
| 2010-11 | 441 | 27 | 16.3:1 | 15% (68) |
| 2000-01 | 391 | 25 | 15.6:1 | 5% (21) |
| 1990-91 | 233 | 19 | 12.3:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Lyons Middle/Senior High School.
Since 2017-18: students down 18% (417 to 344); teachers down 1% (24.1 to 23.9).
About Lyons Middle/Senior High School
In LYONS, Colorado, Lyons Middle/Senior High School is a small high school. It is open to students in grades 6 through 12 and enrolls 344 students. By comparison, high schools in Colorado enroll about 627 students on average.
Within St. Vrain Valley School District No. Re1J, Lyons Middle/Senior High School is one of 54 schools. The district enrolls 31,607 students.
White students are 85% of those enrolled at Lyons Middle/Senior High School. Beyond that, enrollment is 9% Hispanic and 4% multiracial. A diversity index of 26% means there is a 26% chance two randomly chosen students at Lyons Middle/Senior High School are from different groups.
On staff are 23.9 full-time-equivalent teachers; the student-to-teacher ratio is 14.4:1. High schools in Colorado have an average ratio of 16.9:1. About 26% of students at Lyons Middle/Senior High School are eligible for free or reduced-price lunch.
Lyons Middle/Senior High School is a top-10% school in Colorado on BeatsExpectations, beating its predicted average proficiency rate across its state test results of 50.9% with an actual 65.0%.
Looking at the county, Boulder County, the median household earns about $103,994 a year, the share of adults with a bachelor's degree or higher is 64%, and about 4% of people live in poverty. Counting Lyons Middle/Senior High School, Boulder County has 86 public schools.
Of the public schools around it, Lyons Middle/Senior High School is closest to Lyons Elementary School, about 0.8 miles away. Inside a five-mile radius, there are 2 other public schools. Compared with its nearest neighbors, Lyons Middle/Senior High School ranks 5th of 9 on average proficiency.
The school's locale code, Rural: Distant, means it is in rural territory some distance from an urban area.
Enrollment fell 14% over 4 years, reaching 344 in 2024-25. The ratio of students to teachers went from 16.6:1 to 14.4:1 over the same years.
Anyone can start a thread about fundraisers, report cards, and school supplies at Lyons Middle/Senior High School. Teachers and staff are welcome to share updates too.
Boulder County at a glance
View full county profilePopulation
328,961
Census ACS
Median income
$103,994
Household, ACS
Bachelor's+
64%
Adults 25+
Poverty rate
4%
Below federal line
Schools in county
86
42,200 students
Quick facts
Related schools
Other schools in St. Vrain Valley School District No. Re1J
- Erie High SchoolHigh · 1,727 students
- Niwot High SchoolHigh · 1,509 students
- Frederick Senior High SchoolHigh · 1,491 students
- Longmont High SchoolHigh · 1,268 students
- Soaring Heights PK-8Elementary · 1,211 students
- Silver Creek High SchoolHigh · 1,208 students
Nearby schools
- Lyons Elementary School0.8 mi · 255
- Hygiene Elementary School4.9 mi · 313
- Westview Middle School6.0 mi · 621
- Longmont Estates Elementary School6.4 mi · 365
- Silver Creek High School6.7 mi · 1,208
- Blue Mountain Elementary6.8 mi · 542
Frequently asked questions
About Lyons Middle/Senior High SchoolWhat is the total enrollment at Lyons Middle/Senior High School?
Lyons Middle/Senior High School enrolls approximately 344 students in grades 06-12.
What grades does Lyons Middle/Senior High School serve?
Lyons Middle/Senior High School serves grades 06-12.
How many teachers does Lyons Middle/Senior High School have?
Lyons Middle/Senior High School employs 24 FTE teachers, for a student-to-teacher ratio of 14.4:1.
How diverse is Lyons Middle/Senior High School?
Lyons Middle/Senior High School reports a student body of 85% White, 9% Hispanic, 0% Black, 0% Asian, 4% Two or more.
What district is Lyons Middle/Senior High School in?
Lyons Middle/Senior High School is part of St. Vrain Valley School District No. Re1J.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.