| District | City | Rating | Students | Schools | Grades | Zip Codes |
|---|---|---|---|---|---|---|
| Mackay Joint School District 182 | Mackay | 3/10 Below Average · 25th pct | 231 | 2 | PK–12 | 1 |
| Challis Joint School District 181 | Challis | 2/10 Poor · 16th pct | 328 | 3 | PK–12 | 5 |
How Custer County compares
Together they enroll 559 students across 5 schools. The largest is Challis Joint School District 181 with 328 students. Districts here average 2.5/10, below the Idaho average of 5.6/10. Ratings range from 2/10 to 3/10.
School Districts in Custer County, Idaho
Custer County has 2 public school districts covering 6 zip codes. The top-rated district in Custer County is Mackay Joint School District 182 (3/10). Ratings are based on the share of students proficient in reading and math on state assessments (NCES EDFacts, 2021–22 for most districts), ranked against all districts in Idaho. 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 Custer County, ID?
2 school districts serve zip codes in Custer County, ID. 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 Custer County, ID?
Of the districts serving Custer County, Mackay Joint School District 182 has the highest rating on this site at 3/10. That places it in the 25th percentile among Idaho school districts.
How are these school district ratings calculated?
Each rating is the share of students scoring proficient or above on Idaho reading and math assessments, ranked against other districts in Idaho and converted to a 1–10 scale. Percentiles compare districts within Idaho only, never across state lines.