Enrollment
314
Elementary
DISTRICT 404 · STATE 379
SCHOOL COMMUNITY·JEFFERSON COUNTY SCHOOL DISTRICT NO. R-1·NCES 080480001548
Semper Elementary School
7575 WEST 96TH AVENUE, WESTMINSTER, CO 80021 · (303) 982-6460 · Jefferson County
GRADES PK–05ELEMENTARY21-SUBURBTITLE IREGULAR SCHOOL314 STUDENTS
C-
allk12 Grade
Scored higher than 16% of Colorado public elementary schools
- CTest scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- DBeats 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 elementary schools
Student : Teacher
17.4:1
18 FTE teachers
DISTRICT 15.9:1 · STATE 16.6:1
Free / Reduced Lunch
45%
142 students
DISTRICT 35% · STATE 50%
Community
0
0 members
Enrollment and student:teacher ratio compared against other elementary schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Pre-K | 58 | 18% |
| Kindergarten | 49 | 16% |
| Grade 1 | 37 | 12% |
| Grade 2 | 40 | 13% |
| Grade 3 | 44 | 14% |
| Grade 4 | 38 | 12% |
| Grade 5 | 48 | 15% |
This year's kindergarten class (49) is about the same size as its 5th grade class (48).
Student demographics
63%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
31.3%
CO avg 44.9% . +3.9pp since 2023
Math
20.2%
CO avg 36.1% . -3.3pp since 2023
What this means: On the CMAS, Colorado's statewide test, about 31 of every 100 students at this school read and write at grade level and about 20 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 4 points since 2023, while math scores are down about 3 points.
CMAS results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 31.3% | 20.2% |
| 2023-24 | 27.4% | 23.5% |
% 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
27.8%
composite math + reading, all grades
Predicted
39.3%
based on CO schools with similar FRL share
Beats by
-11.5pp
below demographic expectation
What this means: About 28% of students here test proficient in math and reading, compared with the roughly 39% 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 Semper Elementary School
Semper Elementary School's state test result (27.8% proficient) is higher than 1 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Semper Elementary School this school | 314 | 45.2% | 27.8% |
| Emerald Elementary School BROOMFIELD | 383 | 50.9% | 46.0% |
| Glacier Peak Elementary School BRIGHTON | 412 | 47.6% | 31.3% |
| Eagleview Elementary School THORNTON | 451 | 39.2% | 43.0% |
| Adams Elementary School WESTMINSTER | 310 | 41.9% | 27.1% |
| Eagle Crest Elementary School LONGMONT | 421 | 44.9% | 48.8% |
Matched among Colorado elementary 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 Semper Elementary School ranks
Among elementary schools| Measure | This school | In Colorado | In Jefferson County |
|---|---|---|---|
| State test proficiency ranked highest first | 27.8% | #618 of 931 | #67 of 82 |
| Math proficiency ranked highest first | 20.2% | #707 of 940 ▼ 69 | #72 of 85 ▼ 6 |
| Reading proficiency ranked highest first | 31.3% | #633 of 946 ▲ 56 | #72 of 85 ▲ 2 |
| Enrollment ranked largest first | 314 | #669 of 1,056 | #65 of 89 |
| Students per teacher ranked fewest first | 17.4:1 | #714 of 896 | #67 of 86 |
| Diversity index ranked most diverse first | 62.7% | #152 of 896 | #2 of 86 |
| Free and reduced lunch ranked highest share first | 45.2% | #527 of 983 | #22 of 85 |
| Enrollment change since 2017-18 ranked steepest decline first | -22.1% | #234 of 664 | #18 of 62 |
Ranked against other public elementary 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
314
+2 (+1%) vs 2020
-41% since 2000-01, when it was 529
Student : Teacher
17.4:1
was 15.6:1
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 | 314 | 18 | 17.4:1 | 45% (142) |
| 2023-24 | 313 | 22.5 | 13.9:1 | 51% (161) |
| 2022-23 | 296 | 20.7 | 14.3:1 | 51% (152) |
| 2020-21 | 312 | 20 | 15.6:1 | 46% (145) |
| 2017-18 | 403 | 22.3 | 18.1:1 | 44% (179) |
| 2015-16 | 421 | 24 | 17.5:1 | 40% (170) |
| 2010-11 | 444 | 24 | 18.5:1 | 26% (114) |
| 2000-01 | 529 | 26 | 20.4:1 | 11% (56) |
Source: NCES Common Core of Data. Rows are the federal collections on file for Semper Elementary School.
Since 2017-18: students down 22% (403 to 314); teachers down 19% (22.3 to 18).
About Semper Elementary School
Semper Elementary School is a small elementary school found in WESTMINSTER, Colorado. There are 314 students enrolled, covering pre-K through 5.
The district for Semper Elementary School is Jefferson County School District No. R-1, with 148 schools and 74,935 students.
The student body at Semper Elementary School has no majority group. White students lead at 49%. The next largest groups are 35% Hispanic, 8% Asian, and 5% multiracial. The school's White share is 30 points below the 80% share among Jefferson County residents. Measured by the diversity index, the student body scores 63%.
The school lists 18 full-time-equivalent teachers and a student-to-teacher ratio of 17.4:1. Compared with the 16.6:1 average for elementary schools in Colorado, this school's ratio is higher. Free or reduced-price lunch covers 45% of the student body. Compared with the 32% average for public schools in Jefferson County, the school's rate is higher.
Semper Elementary School earns a C- on the allk12 Grade, which blends test scores, results against poverty-based expectations, and the three-year trend. It scored higher than 16% of Colorado public elementary schools.
Compared with Colorado schools that have similar shares of low-income students, Semper Elementary School's results are 11.5 points below predicted: 27.8% against 39.3%.
The school is in Jefferson County, where median household income comes to about $110,656, roughly 52% of adults have a four-year degree or more, and about 4% of residents live below the federal poverty line. Jefferson County's 168 public schools enroll about 74,739 students and include Semper Elementary School.
Mandalay Middle School sits about 0.3 miles from Semper Elementary School. Semper Elementary School has at least 8 other public schools within five miles. The nearest schools with test data average 38.3%, higher than Semper Elementary School's 27.8%.
Locale: Suburb: Large. In NCES terms, the school is in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more.
Enrollment was essentially flat over 4 years: 312 in 2020-21, 314 in 2024-25. The ratio of students to teachers went from 15.6:1 to 17.4:1 over the same years.
Parents, students, and staff can share information on pickup and drop-off, after-school programs, and teacher feedback here. Parents, students, alumni, and staff are welcome to post.
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 WESTMINSTER
- Westminster High SchoolHigh · 2,010 students
- Academy of Charter SchoolsCombined · 1,887 students
- Mountain Range High SchoolHigh · 1,788 students
- Standley Lake High SchoolHigh · 1,123 students
- Colorado Preparatory Academy Elementary SchoolElementary · 933 students
- Colorado Preparatory Academy High SchoolHigh · 823 students
Nearby schools
- Mandalay Middle School0.3 mi · 443
- Summit Academy0.5 mi · 66
- Jefferson Academy Elementary0.5 mi · 737
- Doral Academy of Colorado0.6 mi · 168
- Woodrow Wilson Charter Academy0.7 mi · 518
- Adams Elementary School0.8 mi · 310
Frequently asked questions
About Semper Elementary SchoolHow many students attend Semper Elementary School?
Semper Elementary School enrolls approximately 314 students in grades PK-05.
Is Semper Elementary School an elementary, middle, or high school?
Semper Elementary School is an elementary school covering grades PK-05.
How many teachers does Semper Elementary School have?
Semper Elementary School employs 18 FTE teachers, for a student-to-teacher ratio of 17.4:1.
What is the student diversity at Semper Elementary School?
Student demographics at Semper Elementary School are roughly 49% White, 35% Hispanic, 1% Black, 8% Asian, 5% Two or more.
What district is Semper Elementary School in?
Semper Elementary School is part of Jefferson County School District No. R-1.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.