I'm a SLPA in California. Just make sure you're doing the leg work for the right credentials and licensing for your state. I had to complete a few state requirements to get my SLPA license and now I work for LAUSD. I'm learning a lot from my supervisors and definitely feel more prepared to become a SLP, but I agree with autismadvocate that you just need to remember that you're NOT an SLP. And you need to remember the distinction between the two. I haven't had the training or schooling of an SLP, so I'm not allowed to assess students, create goals or objectives or attend IEPs.
I'm applying to graduate school right now, and I feel like my experience as a SLPA has given me an advantage over those with only volunteer or observation experience. I get to point out what I've learned as a SLPA. But I also can point out my limitations as a SLPA, which have been an extra incentive for me to continue on in my education.