Allen, McKinney, Frisco now with their attaching to Cowboys Practice facility. I think Army is saying this will become a norm in big districts. Heck, even CH Collins is pretty nice. Mesquite Memorial just got a brand new facelift. Here is a link from last year on 10 biggest. http://www.wideopencountry.com/10-biggest-high-school-football-stadiums-texas/
here is one where Katy ISD passed a new bond this August, http://usatodayhss.com/2015/next-mega-stadium-for-high-school-football-belongs-to-katy-texas-at-cost-of-58-million
thus isn't a game facility, but Coppell. http://starlocalmedia.com/carrolltonleader/coppell-high-school-to-add-new-arena-upgrade-field-house/article_ca125bbe-24bd-11e4-b468-0019bb2963f4.html