Jefferson High School follows a Block System with six blocks throughout the school year.  Within a block there are four class periods, three are 100 minutes long for content classes and the fourth is a 60 minute period to allow for Mentorship and Community Time.  Allowing for students to potentially earn 3.5 credits per block for total of 21 credits per year.  Students also have the option of completing independent study courses in order to move at a faster pace or to earn more credits throughout the school year.  

Block 1: 8/25/2025- 10/2/2025

Block 2:  10/6/2025- 11/13/2025

Block 3: 11/17/2025- 01/15/2026

Block 4: 01/20/2026- 02/26/2026

Block 5: 03/02/2026- 04/16/2026

Block 6: 04/20/2026- 05/29/2026 

2025-2026 Bell Schedule (M-Th):

8:20-10:00 1st Period

10:05-11:05 2nd Period Community Time/ Mentorship

11:10-11:55 3rd Period

11:55-12:35 Lunch

12:40-1:35 3rd Period Continues

1:40-3:20 4th Period

Friday Schedule

Students are invited and parents notified Thursday afternoon.  All students are welcome but for those that are invited, attendance is required.   Students can be checked out of school once finished with work/intervention. 

8:20 a.m. -12:50 p.m.

Jefferson High School is the alternative high school in Jefferson Joint School District #251, located in rural Southeast Idaho. We began as a school in 1997 at the National Guard Armory in Rigby, Idaho, then moved to the Jefferson County Fair Grounds in 1998 to 2001, and finally moved to the current location (the old Midway Middle School Building) in 2002. The school is situated between a potato processing plant and agricultural farm land. The community that Jefferson High School serves, is focused around the town of Rigby with a population close to 3,500 people in city limits and nearly 25,000 more people living within a few miles.