Mrs. Fluffy Puffy, mine were the same way, I had some of mine today actually taking a dust bath, have not seen them do that since they were young pullets. They were even hanging out inside the coop, heck I may even get to turn the fan off I have in their coop soon.
Busyteacher - does Texas School Districts have a science center? I am a born & raised California Girl, who just moved to Texas in March. I know for LAUSD Los Angeles Unified School Dist. they had a science center, which had incubators, chicken eggs, duck eggs, frog eggs, anything you wanted to hatch, a teacher could go over & sign out. Could you check with the local high school or maybe a FFA & see if you could borrow a incubator and if a local breeder might donate some eggs to your class. A million years ago

(1968), when I was in 1st grade we hatched baby chicks, it was the coolest thing. My teacher had a farm and took them with her when she retired that summer.
My two girls miss having baby chicks, and keep asking when we can get more or when our chickens will have babies. We just had our first egg on Thursday, and my girls have been on egg watch ever since.