High Schools in Fremont County Joint District

Fremont County Joint District in Idaho contains three high schools: South Fremont High School (grades 9-12, 462 students), North Fremont Junior/Senior High School (grades 6-12, 316 students), and Five-County Detention Center (grades 5-12, 18 students), serving 796 students in a district ranked 66th out of 101 in the state. The district's two traditional high schools, however, tell very different stories when it comes to performance and momentum.

North Fremont Junior/Senior High School is the district's most improved school. Its state rank jumped from the 5th percentile in 2022-2023 to the 30th percentile in 2025-2026, and it earned 2 stars after previously receiving 0. Year-over-year gains were strong in every subject: math proficiency rose from 32.4% to 42.3%, science from 25.5% to 36.5%, and ELA from 36.8% to 52.7%. It also has the district's best attendance, with just 11.1% chronic absenteeism, better than the state rate of 13.8%. South Fremont High School is moving in the opposite direction. It was the district's top-ranked school in 2022-2023 at the 49th percentile with 3 stars, but has since fallen to the 12th percentile with only 1 star. Its chronic absenteeism rate is 16.5%, and its End-of-Course math proficiency is just 17.9%.

Neither traditional high school reaches the state average in End-of-Course math (33.1%) or science (41.2%). North Fremont Junior/Senior High School's ELA score of 60.0% is nearly at the state average of 61.3%, while South Fremont High School trails at 45.2%. South Fremont faces greater economic challenges, with 51.3% of students eligible for free or reduced lunch compared to 44.9% at North Fremont. One notable pattern at North Fremont is the sharp drop in proficiency from middle school to high school coursework: 6th grade math proficiency is 56.4%, but End-of-Course math falls to 28.6%. Both regular schools report an identical 82.5% graduation rate, which matches the district and state figures. Five-County Detention Center has no academic or ranking data, so parents should focus on the two traditional high schools when evaluating this district.