Idaho Falls High School is a four-year public secondary school in central Idaho Falls, Idaho, USA. The current building opened in 1952, though the school itself has been in operation since 1897. Idaho Falls is the older of the two traditional high schools, the other is Skyline, in the Idaho Falls School District#91.
Serving 1,269 students in grades 9-12, Idaho Falls Senior High School ranks in the top 50% of all schools in Idaho for overall test scores (math proficiency is bottom 50%, and reading proficiency is bottom 50%).
The percentage of students achieving proficiency in math is 38% (which is lower than the Idaho state average of 41%). The percentage of students achieving proficiency in reading/language arts is 60% (which is higher than the Idaho state average of 55%).
The student-teacher ratio of 19:1 is higher than the Idaho state level of 17:1.
Minority enrollment is 24% of the student body (majority Hispanic), which is lower than the Idaho state average of 27% (majority Hispanic).
Quick Facts (2026)
- Grades: 9-12
- Enrollment: 1,269 students
- Student-Teacher Ratio: 19:1
- Minority Enrollment: 24%
- Graduation Rate: 84% (Top 50% in ID)
- Overall Testing Rank: Top 50%
- Math Proficiency: 38% (Btm 50%)
- Reading Proficiency: 60% (Top 50%)
- Science Proficiency: 26% (Btm 50%)
- Source: National Center for Education Statistics (NCES), ID Dept. of Education
School Overview
Idaho Falls Senior High School's student population of 1,269 students has grown by 8% over five school years.
The teacher population of 67 teachers has stayed relatively flat over five school years.
Grades Offered
Grades 9-12
(No virtual instruction)
(No virtual instruction)
Total Students
1,269 students
Gender %
Total Classroom Teachers
67 teachers
Year Founded
1905
Colors
Black, Orange
School Calendar
Last Day of School
Mon. May 25, 2026
Campus Size
50 acres
School Motto
A World Class Education
School Rankings
Idaho Falls Senior High School ranks within the top 50% of all 704 schools in Idaho (based off of combined math and reading proficiency testing data).
The diversity score of Idaho Falls Senior High School is 0.39, which is less than the diversity score at state average of 0.43. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#284 out of 704 schools
(Top 50%)
(Top 50%)
Math Test Scores (% Proficient)
38%
41%
Reading/Language Arts Test Scores (% Proficient)
60%
55%
Science Test Scores (% Proficient)
26%
41%
Student-Teacher Ratio
19:1
17:1
American Indian
n/a
1%
Asian
1%
1%
Hispanic
18%
20%
Black
n/a
1%
White
76%
73%
Hawaiian
n/a
n/a
Two or more races
5%
4%
All Ethnic Groups
Graduation Rate
84%
80%
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
17%
26%
Eligible for Reduced Lunch
6%
8%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), ID Dept. of Education
School Notes
- School Mascot: Tigers
Frequently Asked Questions
What is Idaho Falls Senior High School's ranking?
Idaho Falls Senior High School is ranked #284 out of 704 schools, which ranks it among the top 50% of public schools in Idaho.
What schools are Idaho Falls Senior High School often compared to?
Idaho Falls Senior High Schoolis often viewed alongside schools like Skyline Senior High School, Hillcrest High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
38% of students have achieved math proficiency (compared to the 41% ID state average), while 60% of students have achieved reading proficiency (compared to the 55% ID state average).
What is the graduation rate of Idaho Falls Senior High School?
The graduation rate of Idaho Falls Senior High School is 84%, which is higher than the Idaho state average of 80%.
How many students attend Idaho Falls Senior High School?
1,269 students attend Idaho Falls Senior High School.
What is the racial composition of the student body?
76% of Idaho Falls Senior High School students are White, 18% of students are Hispanic, 5% of students are Two or more races, and 1% of students are Asian.
What is the student-teacher ratio of Idaho Falls Senior High School?
Idaho Falls Senior High School has a student ration of 19:1, which is higher than the Idaho state average of 17:1.
What grades does Idaho Falls Senior High School offer ?
Idaho Falls Senior High School offers enrollment in grades 9-12 (No virtual instruction).
What school district is Idaho Falls Senior High School part of?
Idaho Falls Senior High School is part of Idaho Falls School District.
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