Click on this link.
Select Facility Rentals, then Idaho Falls Zoo, then Field Trip.
You will see a few lines of instruction and a calendar for choosing your field trip time.
Call 208-612-8453 with questions.
School Groups (tax exempt)
Adults (age 13-61): $6.17
Seniors (age 62 and over): $4.75
Children (age 4-12): $3.81
Children (age 3 and under): Free
This includes scout troops (must be in uniform) and groups of 20 or more.