Enrollment
307
Combined
STATE 523
SCHOOL COMMUNITY·SIERRA GRANDE SCHOOL DISTRICT NO. R-30·NCES 080414000572
Sierra Grande K-12 School
17523 EAST HIGHWAY 160, BLANCA, CO 81123 · (719) 379-3257 · Costilla County
GRADES PK–12COMBINED43-RURALTITLE IREGULAR SCHOOL307 STUDENTS
B
allk12 Grade
Scored higher than 57% of Colorado public K-12 schools
- CTest scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- ABeats 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 K-12 schools
Student : Teacher
21.7:1
14 FTE teachers
STATE 14.3:1
Free / Reduced Lunch
79%
243 students
STATE 50%
Community
0
0 members
Enrollment and student:teacher ratio compared against other combined schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Pre-K | 24 | 8% |
| Kindergarten | 22 | 7% |
| Grade 1 | 25 | 8% |
| Grade 2 | 21 | 7% |
| Grade 3 | 27 | 9% |
| Grade 4 | 19 | 6% |
| Grade 5 | 22 | 7% |
| Grade 6 | 17 | 6% |
| Grade 7 | 24 | 8% |
| Grade 8 | 19 | 6% |
| Grade 9 | 26 | 8% |
| Grade 10 | 26 | 8% |
| Grade 11 | 21 | 7% |
| Grade 12 | 14 | 5% |
This year's kindergarten class (22) is 16% larger than its 8th grade class (19).
Student demographics
34%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
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
24.4%
CO avg 44.9% . +5.2pp since 2023
Math
15.4%
CO avg 36.1% . +3.8pp since 2023
What this means: On the CMAS, Colorado's statewide test, about 24 of every 100 students at this school read and write at grade level and about 15 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 5 points since 2023, while math scores are up about 4 points.
CMAS results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 24.4% | 15.4% |
| 2023-24 | 19.2% | 11.6% |
% 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
25.3%
composite math + reading, all grades
Predicted
18.7%
based on CO schools with similar FRL share
Beats by
+6.6pp
above demographic expectation
What this means: About 25% 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 Sierra Grande K-12 School
Sierra Grande K-12 School's state test result (25.3% proficient) is higher than 4 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Sierra Grande K-12 School this school | 307 | 79.2% | 25.3% |
| Centennial School SAN LUIS | 186 | 91.4% | 16.4% |
| Bethune Public Schools BETHUNE | 99 | 71.7% | 18.4% |
| Holly School HOLLY | 276 | 64.1% | 26.4% |
| Kunsmiller Creative Arts Academy DENVER | 670 | 82.1% | 14.4% |
| Mountain Valley School SAGUACHE | 105 | 76.2% | 21.5% |
Matched among Colorado K-12 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 Sierra Grande K-12 School ranks
Among K-12 schools| Measure | This school | In Colorado |
|---|---|---|
| State test proficiency ranked highest first | 25.3% | #11 of 17 |
| Math proficiency ranked highest first | 15.4% | #16 of 17 no change |
| Reading proficiency ranked highest first | 24.4% | #13 of 17 ▲ 2 |
| Enrollment ranked largest first | 307 | #8 of 38 |
| Students per teacher ranked fewest first | 21.7:1 | #12 of 12 |
| Diversity index ranked most diverse first | 34.2% | #7 of 12 |
| Free and reduced lunch ranked highest share first | 79.2% | #4 of 21 |
Ranked against other public K-12 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
307
+46 (+18%) vs 2020
+133% since 1990-91, when it was 132
Student : Teacher
21.7:1
was 11.9:1
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 | 307 | 14.1 | 21.7:1 | 79% (243) |
| 2023-24 | 302 | 19.2 | 15.7:1 | 82% (247) |
| 2022-23 | 289 | 19.4 | 14.9:1 | 78% (224) |
| 2020-21 | 261 | 22 | 11.9:1 | 87% (228) |
| 2017-18 | 288 | 22 | 13.1:1 | 86% (247) |
| 2015-16 | 290 | 20 | 14.5:1 | 86% (250) |
| 2010-11 | 88 | 7 | 12.6:1 | 70% (62) |
| 2000-01 | 126 | 11 | 11.4:1 | 75% (94) |
| 1990-91 | 132 | 10 | 13.2:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Sierra Grande K-12 School.
Since 2017-18: students up 7% (288 to 307); teachers down 36% (22 to 14.1).
About Sierra Grande K-12 School
Sierra Grande K-12 School is a small combined-grade school in BLANCA, Colorado. The school had 307 students in pre-K through 12 in 2024-25. Average enrollment for combined schools in Colorado is about 523, so this school runs 41% smaller than that.
Sierra Grande K-12 School is listed under Sierra Grande School District No. R-30 in federal data.
By race and ethnicity, Sierra Grande K-12 School is 79% Hispanic. Other reported shares: 16% White and 4% multiracial. That compares with about 55% Hispanic among all Costilla County residents. By the diversity index, Sierra Grande K-12 School comes in at 34%.
Teachers at Sierra Grande K-12 School total 14.1 full-time equivalents, and the ratio is 21.7:1. For comparison, combined schools in Colorado average 14.3:1. Federal records put free or reduced-price lunch eligibility at 79%.
allk12 grades Sierra Grande K-12 School a B. The grade compares the school only with Colorado public K-12 schools, because each state gives its own test.
The school's average proficiency rate on state tests is 25.3%. For its free or reduced-price lunch share, the predicted value is 18.7%.
Across Costilla County, median household income is about $36,861, a bachelor's degree or higher is held by about 25% of adults, and the poverty rate is about 20%. The public schools of Costilla County number 2 and enroll about 493.
Nearest public school: Centennial School, about 15.4 miles away.
Under the NCES locale system, Sierra Grande K-12 School is Rural: Remote.
Sierra Grande K-12 School had 261 students in 2020-21 and 307 in 2024-25, an 18% gain. Its ratio of students to teachers was 11.9:1 in 2020-21, and 21.7:1 in 2024-25.
If you have questions about science fairs, picture day, and bus routes at Sierra Grande K-12 School, you can post them here. Anyone with firsthand experience at this school can post or comment.
Costilla County at a glance
View full county profilePopulation
3,607
Census ACS
Median income
$36,861
Household, ACS
Bachelor's+
25%
Adults 25+
Poverty rate
20%
Below federal line
Schools in county
2
493 students
Quick facts
Related schools
Nearby schools
- Centennial School15.4 mi · 186
- Alamosa Elementary School 3-523.6 mi · 473
- Alamosa Elementary School K-223.7 mi · 437
- Ortega Middle School23.8 mi · 471
- Alamosa Online23.9 mi · 29
- Alamosa Alternative Education School23.9 mi · 60
Frequently asked questions
About Sierra Grande K-12 SchoolHow many students attend Sierra Grande K-12 School?
Sierra Grande K-12 School enrolls approximately 307 students in grades PK-12.
What grades does Sierra Grande K-12 School serve?
Sierra Grande K-12 School serves grades PK-12.
What is the student-teacher ratio at Sierra Grande K-12 School?
The student-to-teacher ratio at Sierra Grande K-12 School is approximately 21.7:1 (14 FTE teachers).
What is the racial breakdown of students at Sierra Grande K-12 School?
At Sierra Grande K-12 School, the student body is approximately 16% White, 79% Hispanic, 1% Black, 4% Two or more.
Who oversees Sierra Grande K-12 School?
Sierra Grande K-12 School is overseen by Sierra Grande School District No. R-30 in Costilla County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.