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Sierra Grande K-12 School

Public, Alternative Grades PK, KG-12
686th
SchoolDigger Rank ?
of 950 Colorado Alternative Schools
Better than 28% of Colorado alternative schools
Summary

Sierra Grande K-12 School is an alternative public school located in Blanca, Colorado, serving grades PK-12 with a total enrollment of 302 students. The school has faced fluctuations in its graduation and dropout rates in recent years, and it also has a high rate of chronic absenteeism.

Academically, Sierra Grande K-12 School consistently underperforms the state average in proficiency rates across various CMAS assessments, including English Language Arts, Math, and Science. For example, in the 2024-2025 school year, the school's proficiency rates in CMAS English Language Arts (24.4%) and Math (15.4%) were significantly lower than the state averages of 44.8% and 35.9%, respectively. The school's performance on SAT and PSAT assessments also lags behind the state averages. Additionally, the school has a very high percentage of students eligible for free or reduced-price lunch, ranging from 76.83% to 81.79%, suggesting a predominantly low-income student population. The student-teacher ratio at the school is relatively high, ranging from 14 to 15.7 students per teacher, which may impact the level of individual attention and support that students receive.

Interestingly, the nearby Centennial School, also an alternative public school, has a similar academic performance profile, with lower CMAS proficiency rates compared to state averages. However, Centennial School has a slightly higher student-teacher ratio (16.5) than Sierra Grande K-12 School, which may contribute to its relatively lower academic performance. The high rates of chronic absenteeism, the high percentage of low-income students, and the relatively high student-teacher ratio at Sierra Grande K-12 School may be significant factors contributing to the school's academic challenges.

307
Students ?
21.7
Student/teacher ratio ?
$17,621
Per pupil spending ?
79.2%
Free/discounted lunch ?
 17523 East Highway 160
       Blanca, CO  81123-9107

(719) 379-3257

District: Sierra Grande School District No. R-30

Racial breakdown:

Hispanic:
79.5%
White:
15.6%
Two or more races:
3.9%
more
 See top rated Colorado elementary schools

 Compare Sierra Grande K-12 School to nearby alternative schools!
At a glance
Ranking trend: Improving — 28th percentile in 2019 → 33rd in 2025
Strengths
Ranking is trending up — up 5 percentile points since 2019
Worth a look
!Test scores below the Colorado average (27% vs 42% meeting standards)
!Mathematics scores 26 pts below the Colorado average
Students meeting standards (2024-2025) ?
This school27%
District avg27%
Colorado avg42%
Elementary school
686th of 950
Colorado public elementary schools ?
Bottom 28%▲ up 8 pts since 2015
From bottom 20% (2015) to bottom 28% (2025)
See the entire ranking list of Colorado Elementary Schools →
SchoolDigger rating ?
Middle school
377th of 469
Colorado public middle schools ?
Bottom 20%▼ down 16 pts since 2015
From bottom 36% (2015) to bottom 20% (2025)
See the entire ranking list of Colorado Middle Schools →
SchoolDigger rating ?
High school
220th of 328
Colorado public high schools ?
Bottom 33%▲ up 20 pts since 2015
From bottom 13% (2015) to bottom 33% (2025)
See the entire ranking list of Colorado High Schools →
SchoolDigger rating ?
Statewide rank percentile over time (100 = the top-ranked school in the state; click a legend item to add a student group)
Elementary school ranking
Show full rank history (all student groups)

All Students

YearAvg scoreStatewide rankColorado percentileRating
202523.5686 of 95027.8%★☆☆☆☆
202427.1651 of 94331.0%★★☆☆☆
202317.9764 of 93318.1%★☆☆☆☆
201941.9527 of 96545.4%★★☆☆☆
201813.9820 of 91710.6%★☆☆☆☆
201727.0655 of 92929.5%★☆☆☆☆
201617.1764 of 91416.4%★☆☆☆☆
201519.5755 of 93819.5%★☆☆☆☆
201439.7610 of 96236.6%★★☆☆☆

Low Socio Economic Status

YearAvg scoreStatewide rankColorado percentileRating
202534.9230 of 33731.8%★★☆☆☆
Middle school ranking
Show full rank history (all student groups)

All Students

YearAvg scoreStatewide rankColorado percentileRating
202519.2377 of 46919.6%★☆☆☆☆
202312.7422 of 48012.1%★☆☆☆☆
202242.9238 of 44846.9%★★☆☆☆
201925.7329 of 45828.2%★☆☆☆☆
201813.6373 of 41810.8%★☆☆☆☆
201533.6281 of 43635.6%★★☆☆☆
201438.2289 of 46137.3%★★☆☆☆
High school ranking
Show full rank history (all student groups)

All Students

YearAvg scoreStatewide rankColorado percentileRating
202534.4220 of 32832.9%★★☆☆☆
202423.2262 of 34924.9%★☆☆☆☆
202336.5214 of 34938.7%★★☆☆☆
201838.3221 of 38843.0%★★☆☆☆
201516.5253 of 29213.4%★☆☆☆☆
201440.8233 of 36936.9%★★☆☆☆
201318.3284 of 34918.6%★☆☆☆☆
201236.3225 of 33432.6%★★☆☆☆
201132.0241 of 33728.5%★☆☆☆☆
201036.1225 of 32731.2%★★☆☆☆
200915.6266 of 31014.2%★☆☆☆☆
200841.4191 of 30136.5%★★☆☆☆
200726.5232 of 29822.1%★☆☆☆☆
200618.6240 of 28616.1%★☆☆☆☆
200518.0239 of 28014.6%★☆☆☆☆
200438.4176 of 27936.9%★★☆☆☆

Hispanic

YearAvg scoreStatewide rankColorado percentileRating
202438.6113 of 19943.2%★★☆☆☆
How student groups rank statewide ? (each group's percentile vs the same group at other schools — higher is better; the +/- beside each compares the group with this school's overall percentile)
Elementary school
Low Socio Economic Status (2025)32nd percentile+4 vs school
High school
Hispanic (2024)43rd percentile+18 vs school
By subject vs Colorado (2024-2025) ?
Reading and Writing58%-7 vs state
Science30%-4 vs state
English Language Arts24%-20 vs state
Math15%-21 vs state
Mathematics12%-26 vs state

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Frequently Asked Questions about Sierra Grande K-12 School

Students at Sierra Grande K-12 School are 79% Hispanic, 16% White, 4% Two or more races.

In the 2024-25 school year, 307 students attended Sierra Grande K-12 School.

Sierra Grande K-12 School ranks 686th of 950 Colorado alternative schools. SchoolDigger rates this school 1 star out of 5.


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SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau and the Colorado Department of Education.

IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that boundaries are up-to-date. But it's important to note that these are approximations and are for general informational purposes only. To verify legal descriptions of boundaries or school locations, contact your local tax assessor's office and/or school district.





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