Each university is very different in what they look for in their applicants. From my experience, I know that my last 60 units GPA and my GPA in the pre-requisite courses were both factors in my application process. I applied and was accepted to Cal State San Marcos for their SLP Master's program this fall. When I first began looking at the different programs in my area (SoCal), I attended the free information sessions that the universities offered. After visiting the one at San Marcos, I found that they have a big focus on personalities. They do not require the GRE, but like to see A's in the pre-requisite courses (I had all A's and 1 B). They also told us that while they like to see a decent GPA (at least around 3.0), that is not their biggest deciding factor; they really want someone who will be a good fit at their school. The interview was mostly knowledge based (2 quizzes), but they also wanted you to answer some questions individually about a possible case scenario. I encourage you to start looking more into the specific schools you think you want to attend, go to the campus if you can, and ask a lot of questions. This will help to give you a better idea of what each school is looking for and if it will be a good fit for you.