Castleford High School also known as Castleford School is a public school located in the City of Castleford of Twin Falls County, Idaho, United States. It is part of Castleford School District.
Serving 274 students in grades Prekindergarten-12, Castleford School ranks in the bottom 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 35-39% (which is lower than the Idaho state average of 41%). The percentage of students achieving proficiency in reading/language arts is 45-49% (which is lower than the Idaho state average of 55%).
The student-teacher ratio of 13:1 is lower than the Idaho state level of 17:1.
Minority enrollment is 37% of the student body (majority Hispanic), which is higher than the Idaho state average of 28% (majority Hispanic).
Quick Facts (2026-27)
- Grades: Prekindergarten-12
- Enrollment: 274 students
- Student-Teacher Ratio: 13:1
- Minority Enrollment: 37%
- Graduation Rate: ≥80% (Top 50% in ID)
- Overall Testing Rank: Bottom 50%
- Math Proficiency: 35-39% (Btm 50%)
- Reading Proficiency: 45-49% (Btm 50%)
- Science Proficiency: 40-44% (Top 50%)
- Attendance Zone: Castleford School's attendance zone encompasses the entire school district, covering approximately 451.5 square miles around Castleford, ID, with a typical drive to the school ranging from 20 to 30 minutes and an average distance of 14.3 miles to the zone's edge, extending up to 25.8 miles at its furthest point.
- Source: National Center for Education Statistics (NCES), ID Dept. of Education
School Overview
Castleford School's student population of 274 students has declined by 18% over five school years.
The teacher population of 21 teachers has stayed relatively flat over five school years.
Grades Offered
Grades Prekindergarten-12
(No virtual instruction)
(No virtual instruction)
Total Students
274 students
Total Classroom Teachers
21 teachers
Year Founded
1947
School Calendar
School Rankings
Castleford School ranks within the bottom 50% of all 704 schools in Idaho (based off of combined math and reading proficiency testing data).
The diversity score of Castleford School is 0.47, which is more than the diversity score at state average of 0.44. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#431 out of 704 schools
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
35-39%
41%
Reading/Language Arts Test Scores (% Proficient)
45-49%
55%
Science Test Scores (% Proficient)
40-44%
41%
Student-Teacher Ratio
13:1
17:1
American Indian
n/a
1%
Asian
n/a
1%
Hispanic
37%
21%
Black
n/a
1%
White
63%
72%
Hawaiian
n/a
n/a
Two or more races
n/a
4%
All Ethnic Groups
Graduation Rate
≥80%
80%
Chronically Absent Students
(22-23)9.9%
16.9%
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
56%
32%
Eligible for Reduced Lunch
16%
7%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), ID Dept. of Education
School Notes
- School Mascot: Wolves
Frequently Asked Questions
What is Castleford School's ranking?
Castleford School is ranked #431 out of 704 schools, which ranks it among the bottom 50% of public schools in Idaho.
What schools are Castleford School often compared to?
Castleford Schoolis often viewed alongside schools like Buhl Middle School, Xavier Charter School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
35-39% of students have achieved math proficiency (compared to the 41% ID state average), while 45-49% of students have achieved reading proficiency (compared to the 55% ID state average).
What is the graduation rate of Castleford School?
The graduation rate of Castleford School is 80%, which is equal to the Idaho state average of 80%.
How many students attend Castleford School?
274 students attend Castleford School.
What is the racial composition of the student body?
63% of Castleford School students are White, and 37% of students are Hispanic.
What is the student-teacher ratio of Castleford School?
Castleford School has a student ration of 13:1, which is lower than the Idaho state average of 17:1.
What grades does Castleford School offer ?
Castleford School offers enrollment in grades Prekindergarten-12 (No virtual instruction).
What school district is Castleford School part of?
Castleford School is part of Castleford School District.
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