S.B.
Just to ease some of your fears. In our area (I am assuming you are in HEB) many schools are leaning towards full inclusion. Which basically means, that unless the student requires constant supervision or an aide, they try to have them in mainstream education. And they cannot implement a plan without you being on board. Most every ARD I have been a part of as a teacher, our goal is to work with parents to help a child achieve. For the most part, these are positive meetings.
I would not worry about hiring a lawyer unless your child's needs are not being met or you cannot come to agreement with the ARD committee.
THis link is basic information, but it's a start. It gives you the basic vocabulary and general rules. http://www.disabilityrightstx.org/files/IDEA_booklet-colo... Here's the TEA link too. http://ritter.tea.state.tx.us/special.ed/ardguide/
My son is in speech with no modifications. This works for us. We are friends with a boy who started kindergarten with a serious speech impediment. Close friends and family were the only ones who could understand him. It seriously affected his reading and classroom communication. It was never considered that he would not be in the regular classroom. He simply had more services available and more modifications. He also got extra reading assistance.
If speech is the biggest concern, it may also help if you have a "premeeting" of sorts with the speech teacher on your campus. I did this. It helped me see where the school was leaning as far as the ARD. I was able to ask about the services available and some questions I had concerning the ARD (since this was my first time being on the other side).
HTH.