TexasCHLforum.com

This has been asked before... I don't have the Penal code in front of me, but you CANNOT carry on school premises. Sorry.

PC w6.03. PLACES WEAPONS PROHIBITED. (a) A person commits
an offense if the person intentionally, knowingly, or recklessly possesses
or goes with a firearm, illegal knife, club, or prohibited weapon
listed in Section 46.05(a):
(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;
....................

It doesn't specify a time.. just simply states that it's prohibited.