Here's some more links that can help you:
1. www.tea.state.tx.us Texas Education Agency, click "District Locator" at the top of the page. Look up the specific region your interested in.
2. www.uil.utexas.edu/ath Univ.Athletic League is the "governing body" for school sports. Here you can find specific 4A school listings & lots of other info.
3. www.austinslambaseball.com Another select organization out of Pflugerville.
4.www.texashighschoolbaseballonline.com
5.www.kylechapman.com Another Houston area select organization. Also, he has pony league teams, www.eteamz.com/kcpony
Also, Randall, Lefty Dad, Glove Man are posters on here that can give you info , too.
Have fun looking!!!