Note: This is a compiled list from all of those who competed in the 3a state championships.
LH was smaller than Gilmer, Pleasanton, Navasota, Carthage, and Robinson. *No school LH played in the playoffs had a smaller enrollment.
Celina was smaller than China Spring, Snyder, Pittsburg, West, Emory Rains and Glen Rose. *No school Celina played in the playoffs had a smaller enrollment
Gilmer was smaller than Roosevelt, Abilene Wylie, Mabank, and Liberty-Eylau. *Only one school Gilmer played in the playoffs was smaller than Gilmer and that was the division 1 state champions LH.
China Spring was smaller than Cuero, La Vega, and Kirbyville. *Only three schools China Spring faced had smaller enrollements in Rockdale, Westood, and the division II state champions Celina.
IMO enrollment does not matter as much as one would think and I think the need for two divisions because of enrollment is a pointless process.