I'm no grammar buff, so I'll refrain from giving advice on the same. I'll just see if your essay has any other problems.
My love affair
This is a cliched phrase. Can you use a different one?
My parents had always been adamant that I earn a degree. As the youngest of three girls my sisters left little hope that we would be attending a graduation ceremony in the near future. When my dad retired after twenty years with the VA hospital and numerous moves we finally returned home to Texas. In this time I attended twelve schools in twelve years. Making friends was hardly worth the effort and my main focus became school and I graduated in the top twenty-five percent of my class.
Okay, I can see why Liebe said this part was boring.
I won't go that far, but I certainly think you are digressing here. A statement of purpose is different from normal college essays. If you read the prompt carefully, you'll see that the whole essay should be somehow related to your chosen discipline. The instructions make that point very clear.
I'd suggest that you concisely say in one line why you could not attend UTSA immediately. Then talk about how you prepared yourself to meet UT's requirements. You can elaborate on what classes you took.
Do you understand what I mean? Everything you say should be built around your chosen discipline. The part about changing schools and stuff is not really relevant.
For the next paragraph, I have to agree with Liebe. There is certainly a hint of generalization; it's not much, but it is there all the same. Some people may interpret that you have not watched enough movies on Latinos. In other words, you may not have the amount of knowledge necessary to make those conclusions.
Can you find a different angle of saying the same thing -- an angle which is objective in nature? That's because I like that part. It shows that you have a certain goal, and this is very important in an SOP.
Michele, you just need to focus your essay a bit more towards your subject and your goals. Do that and your essay should come out fine.