School District · Idaho
Marsh Valley Joint School District 21
📍 Arimo, ID · Bannock County · NCES LEAID 1601950
District Contact & InformationSource: NCES CCD 2024–25
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Grades Served
Pre-K – 12th
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District Mailing Address
PO BOX 180, ARIMO, ID 83214
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NCES District ID (LEAID)
1601950
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District Type
Public School District
Zip Codes Served by Marsh Valley Joint School District 216 zip codes
Frequently Asked Questions
What zip codes are in Marsh Valley Joint School District 21?▼
Marsh Valley Joint School District 21 serves 6 zip codes: 83214, 83234, 83245, 83246, 83250, 83281. Zip codes and district boundaries do not line up exactly, so confirm your exact address with the district office before you rely on an assignment.
How is Marsh Valley Joint School District 21 rated?▼
Marsh Valley Joint School District 21 has an overall rating of 9 out of 10 (Excellent), based on the share of students proficient in reading and math on state assessments (NCES EDFacts). That places it in the 84th percentile among Idaho school districts. Ratings are percentile-ranked within Idaho only and are not comparable across states.
How many students attend Marsh Valley Joint School District 21?▼
The NCES Common Core of Data directory reports enrollment of 1,258 students across 6 schools for Marsh Valley Joint School District 21.
What grades does Marsh Valley Joint School District 21 serve?▼
Marsh Valley Joint School District 21 is listed in the NCES directory as serving grades Pre-K – 12th.
How do I contact Marsh Valley Joint School District 21?▼
You can reach Marsh Valley Joint School District 21 by phone at (208)254-3306 or by mail at PO BOX 180, ARIMO, ID 83214. Contact details come from the NCES district directory and are the best way to confirm which school your address is assigned to.
About Marsh Valley Joint School District 21
Marsh Valley Joint School District 21 is a public school district serving 6 zip codes in Idaho, primarily in Bannock County. It carries an overall rating of 9/10 (Excellent), the 84th percentile among Idaho districts. That rating reflects the share of students proficient in reading and math on state assessments (NCES EDFacts, 2021–22 for most districts with a 2017–18 fallback for the rest) and is ranked only against other Idaho districts — scores are not comparable between states. Directory details on this page come from the NCES Common Core of Data, 2024–25.
District boundaries are address-specific and do not follow zip code lines exactly — a single zip code can
be split between two or more districts. Use the zip codes listed above as a starting point, then confirm your
assignment with the district office at (208)254-3306 before making a housing decision.