That's California, not Texas. Virtually all other states hold to the same standard ~ to wit, there is NO RIDING TIME for residency rules when the purpose of being in the state was to attend school.
I am not sure what you mean by “riding time.” That is a term I have never heard before. However, what I found was wording by the state of Texas that defines Establishing Domicile in Texas. A student from another state can actually get help at their college for meeting the qualifications for establishing domicile. Once the requirements are met, they are considered a Texas resident, and can get the in state tuition rates.
By the way, I live in another state where the colleges are limiting the in state student applications in favor of the out of state students. The colleges want to maximize the out of state students who will then pay the higher tuition rates. The in state students go to the back of the line and may not even get into the college they want. Is that fair or B.S.?