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D−

Mt. Harrison High School

PublicHighGrades 9–12Alternative Education School

1431 17th Street, Heyburn, ID 83336 · (208) 436-6252 · Part of Minidoka County Joint School District 331

Heyburn’s School Grade C better than 26% of Idaho school districts

Directions
Students
122
Students per teacher
12:1
Free or reduced lunch
69%
Setting
Town
Grades
9–12
The gist

What stands out about Mt. Harrison High School

  • Its own letter, D−: reading and math results near the bottom of Idaho’s public schools
  • Math proficiency 37 pts below the state
  • Reading / language arts 42 pts below the state
  • Small classes: 12 students per teacher
  • Enrollment down 26.1% since 2020–21

Test scores

2020–21
Math proficiency2%
State average 39.6%
Reading / language arts12%
State average 54%

Its own letter, D−, places these results among Idaho’s 671 public schools with results. Source: EDFacts via Urban Institute Education Data Portal (SY2020-21).

Location

Directions ↗

1431 17th Street, Heyburn

Students

Enrollment by grade
Grade 923
Grade 1022
Grade 1136
Grade 1241
Enrollment over time
165’20
189’21
129’22
138’23
122’24

Down 26.1% since 2020–21.

Who goes here
Hispanic 53%White 44%American Indian/Alaska Native 2%Asian <1%

As reported to NCES, share of students with a reported race or ethnicity.

Parents talk

Questions and answers about Mt. Harrison High School from Heyburn families.

Other schools in Minidoka County Joint School District 331

The district →
Rupert Elementary School
Elementary · Grades PK–5 · Rupert
D
620 students22:1
Heyburn Elementary School
Elementary · Grades PK–5 · Heyburn
D
508 students20:1
Paul Elementary School
Elementary · Grades PK–5 · Paul
C
457 students20:1
Acequia Elementary School
Elementary · Grades PK–5 · Rupert
C−
253 students21:1
Preschool Center
Prekindergarten · Grades PK · Rupert
75 students25:1
Mini-Cassia Juvenile Detention Center
Other · Grades 3–12 · Rupert
4 students3:1

School facts: U.S. Department of Education (NCES), 2024–2025 school year. Test scores: EDFacts via Urban Institute Education Data Portal (SY2020-21). A school’s letter is our own summary of its reading and math results against Idaho’s other public schools; Heyburn’s School Grade is built from its districts’ results. Map: © OpenStreetMap contributors.