The ISRA does not do testing. However aA few other clubs in the valley do.
N7LGN American Legion Post 113 does test sessions. Usually monthly at the American Legion Post 113 in Meridian. Here is the calendar for that club: https://americanlegionpost113.com/179-2/
Snake River Amateur Radio Club:
Boise County Amateur Radio Club (BCARC):
Email Diane (firstname.lastname@example.org) OR Tom (email@example.com)
The Voice of Idaho Radio Club tests monthly: