Schedules for U13 DA - Frontier Division:
http://www.ussoccerda.com/sam/standings/regevent/index.php?containerId=NDAzMzc2MA==&partialGames=0
There is no DA2. The 2nd teams are playing ECNL for the Dallas clubs. Not sure what leagues the other clubs are playing their 2nd teams in, but it isn't affiliated with the DA program.
GDA starts at u14. The schedule mentioned above is for the boys.