When I was in the fifth or sixth grade, my class from Hohl Elementary, (Yale/Tidwell) took a field trip to Busch Gardens and toured the brewery.
Can you imagine??!!??
Other field trips from elementary school:
Austin, (Barton Springs, Capitol, etc.) A special Saturday trip
Huntsville for the Sam Houston stuff
Opera and Symphony
Mrs. Baird's Bakery
Sea A Rama in Galveston
I don't think they do these any more, do they? Probably a liability issue.