Here's a link to the classified section of our local paper to give you an idea on jobs available.
Post Register - Classifieds
There's not a huge amount of job diversity in Shelley which is still a small, agricultural town. However, Idaho Falls is only a 15 minute drive and a lot of people who don't farm live in Shelley and work in Idaho Falls.j
As for the schools, my best friend moved from Ammon to Shelley and she's been happy with the school system and administration. Her children, ranging in age from 6 to 13, didn't have any trouble adjusting and making new friends.