| District | City | Rating | Students | Schools | Grades | Zip Codes |
|---|---|---|---|---|---|---|
| Sierra Grande School District R-30 | Blanca | 2/10 Poor · 13th pct | 289 | 1 | PK–12 | 2 |
| Centennial School District R-1 | Chama | 1/10 Poor · 8th pct | 193 | 1 | PK–12 | 3 |
How Costilla County compares
Together they enroll 482 students across 2 schools. The largest is Sierra Grande School District R-30 with 289 students. Districts here average 1.5/10, below the Colorado average of 5.6/10. Ratings range from 1/10 to 2/10.
School Districts in Costilla County, Colorado
Costilla County has 2 public school districts covering 5 zip codes. The top-rated district in Costilla County is Sierra Grande School District R-30 (2/10). Ratings are based on the share of students proficient in reading and math on state assessments (CMAS 2025), ranked against all districts in Colorado. Directory details come from NCES CCD 2024–25.
Enter your zip code on any page to confirm your exact district assignment — district boundaries are address-specific and may not follow county or city lines.
Frequently Asked Questions
How many school districts are in Costilla County, CO?
2 school districts serve zip codes in Costilla County, CO. This page lists each one with its rating, enrollment, grade span and the zip codes it covers.
What is the best-rated school district in Costilla County, CO?
Of the districts serving Costilla County, Sierra Grande School District R-30 has the highest rating on this site at 2/10. That places it in the 13th percentile among Colorado school districts.
How are these school district ratings calculated?
Each rating is the share of students scoring proficient or above on Colorado reading and math assessments, ranked against other districts in Colorado and converted to a 1–10 scale. Percentiles compare districts within Colorado only, never across state lines.