I was homeschooled and I have a diploma. Since you're from the great state of Texas like me, your homeschooling is considered a private school and your parents can/should issue a diploma. I forget though, but there is something they have to do for it to made "official." It has to be signed by someone but it's been a few years now and I can't remember.
But once you have it, it's generally better than having a diploma from a public school, as public education has gone down the drain. If you ever choose to go to college, a lot of them perfer homschooled kids over kids who attended public school.
Great choice by you and you parents