Deprecated: Return type of Phpfastcache\Util\ArrayObject::offsetGet($offset) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/devzheng/workspace/psr/vendor/phpfastcache/phpfastcache/lib/Phpfastcache/Util/ArrayObject.php on line 106 Deprecated: Return type of Phpfastcache\Util\ArrayObject::offsetSet($offset, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/devzheng/workspace/psr/vendor/phpfastcache/phpfastcache/lib/Phpfastcache/Util/ArrayObject.php on line 115 Deprecated: Return type of Phpfastcache\Util\ArrayObject::offsetUnset($offset) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/devzheng/workspace/psr/vendor/phpfastcache/phpfastcache/lib/Phpfastcache/Util/ArrayObject.php on line 130 Deprecated: Return type of Phpfastcache\Util\ArrayObject::current() should either be compatible with Iterator::current(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/devzheng/workspace/psr/vendor/phpfastcache/phpfastcache/lib/Phpfastcache/Util/ArrayObject.php on line 48 Deprecated: Return type of Phpfastcache\Util\ArrayObject::next() should either be compatible with Iterator::next(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/devzheng/workspace/psr/vendor/phpfastcache/phpfastcache/lib/Phpfastcache/Util/ArrayObject.php on line 56 Deprecated: Return type of Phpfastcache\Util\ArrayObject::rewind() should either be compatible with Iterator::rewind(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/devzheng/workspace/psr/vendor/phpfastcache/phpfastcache/lib/Phpfastcache/Util/ArrayObject.php on line 80 Deprecated: Return type of Phpfastcache\Drivers\Memcached\Item::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/devzheng/workspace/psr/vendor/phpfastcache/phpfastcache/lib/Phpfastcache/Core/Item/ItemExtendedTrait.php on line 438 Best Public Elementary Schools in Costilla County (2026)
Public School Review - Established 2003

Best Costilla County Public Elementary Schools (2026)

For the 2026 school year, there are 2 public elementary schools serving 488 students in Costilla County, CO.
The top-ranked public elementary schools in Costilla County, CO are Sierra Grande K-12 School and Centennial School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.
Costilla County, CO public elementary schools have an average math proficiency score of 7% (versus the Colorado public elementary school average of 33%), and reading proficiency score of 22% (versus the 43% statewide average). Elementary schools in Costilla County have an average ranking of 1/10, which is in the bottom 50% of Colorado public elementary schools.
Minority enrollment is 84% of the student body (majority Hispanic), which is more than the Colorado public elementary school average of 51% (majority Hispanic).

Best Public Elementary Schools in Costilla County (2026)

School
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Sierra Grande K-12 School
(Math: 6-9% | Reading: 20-24%)
Rank:
1/
10
Bottom 50%
17523 East Highway 160
Blanca, CO 81123
(719) 379-3257
Gr: PK-12 | 307 students Student-teacher ratio: 22:1 Minority enrollment: 84%
Rank: #22.
Centennial School
(Math: ≤5% | Reading: 20-24%)
Rank:
1/
10
Bottom 50%
909 North Main Street
San Luis, CO 81152
(719) 672-3322
Gr: PK-12 | 186 students Student-teacher ratio: 12:1 Minority enrollment: 82%

Frequently Asked Questions

What are the top-ranked public elementary schools in Costilla County, CO?
The top-ranked public elementary schools in Costilla County, CO include Sierra Grande K-12 School and Centennial School.
How many public elementary schools are located in Costillaunty?
2 public elementary schools are located in Costillaunty.
What is the racial composition of students in Costillaunty?
Costillaunty public elementary schools minority enrollment is 84% of the student body (majority Hispanic), which is more than the Colorado public elementary schools average of 51% (majority Hispanic).
Which public elementary schools in Costillaunty are often viewed compared to one another?
Popular comparisons of public elementary schools in Costillaunty include: Sierra Grande K-12 School vs. Centennial School, Centennial School vs. Sierra Grande K-12 School

Recent Articles

AI Report Cards: Should Schools Evaluate AI Use?
AI Report Cards: Should Schools Evaluate AI Use?
Explore whether schools should assess student AI use, the benefits, risks, and what responsible AI report cards could look like in 2026.
The Parent’s Guide to School Cell Phone Bans in 2026
The Parent’s Guide to School Cell Phone Bans in 2026
Learn how school cell phone bans work in 2026, why districts are adopting them, and what parents should expect.
Parental Involvement in Public Schools: 2026 Update
Parental Involvement in Public Schools: 2026 Update
Explore the latest 2026 trends, research, and strategies shaping parental involvement in public schools and student success.

Quick Links

School Search Tools:
School by Type (CO):
State Links: