A high GPA is an important aspect of your application for PA school. However, a high GPA alone won't get you in the door. It is important to work hard to keep your GPA up, in addition to taking all required prerequisite courses.
PT schools require that their prospective students gain some health-related experience before applying. This experience is called PT Observation Hours. Most schools require a certain number of hours, and usually they should be paid. For specific numbers, research the number you will need for your specific school(s) that you are applying to. The general rule of thumb is to rack up as many PT Observation Hours as you can before applying, and make sure they are all documented and signed. These hours will help you determine if becoming a PT is right for you. Also, obtaining these hours will show PT schools that you are serious about being a PT; it will show them that you are motivated enough to go out and test your future career. Finally, it will help you in your interviews for PT school. When they ask you certain questions, you will have personal experiences and examples to help you answer certain questions.
Most schools only require their prospective students to take the GRE, the Graduate Record Examination, but some schools may require the MCAT (Medical College Admission Test) as well, or they recommend reporting your MCAT score if you performed well too. The GRE is equivalent to the MCAT for medical schools. (Check out the MCAT information located on the "Medical" resource tab) It is a standardized test given to prospective postgraduate school students. It allows PA schools to compare students on a single medium since so many different students from so many different universities and majors apply to PA school. If you know what to study, and how to prepare, the GRE can seem a lot less intimidating.