I agree it's high compared to the other Texas schools with similar class sizes. Factors are desirability of the city where the school is located, available opportunities, accreditation status, and success (or not) of matriculants.
Here are the interviewed student numbers compared to class size for the other Texas schools of similar class size:
TCU 256 >> 60, Ft. Worth Texas, no in-state preference as it is a private school on AMCAS system
Dell 368 >> 50, Austin Texas
UH Fertitta 333 >> 60 Houston Texas-adjacent suburb
UT Tyler 272 >> 40 Tyler TX population 110,000 east Texas with the attraction of free 4 year tuition for its first 2 incoming classes (EY23 and EY24)
UTRGV 526 >> 55 Edinburg Texas, population 107,000 in a 880,000 metroplex near the Mexican border.