TexasCHLforum.com

Haven't been there, but it's not listed at Texas3006.com. I'm sure if it was posted, it would be on there due to the amount of traffic the aquarium gets.

I can assure you, it's not prohibited under 46.03 unless a school-sponsored event is being held there.

(1) on the physical premises of a school or educational institution, any grounds or building on which an activity sponsored by a school or educational institution is being conducted, or a passenger transportation vehicle of a school or educational institution, whether the school or educational institution is public or private, unless pursuant to written regulations or written authorization of the institution;

This is a big grey area, because how are you supposed to know when a school-sponsored event is happening? (like a field trip)

However, the general consensus is that if you're not a part of the school sponsored event happening off of school grounds (like a field trip) you should be fine.