I just took the TEAS yesterday, composite was 96.7% - as far as the science section is concerned. I had only taken half a semester of A&P I when I sat for it, but I also have my bachelor's degree already in Biology so that was a decent base for me. I don't believe any of the science questions were super in depth. I would recommend watching the Crash Course Anatomy & Physiology videos on YouTube. I also used the Kaplan ATI TEAS Strategies & Reviews book and the Mometrix ATI TEAS Secretes book. If you don't understand a concept after that go to Khan Academy, but they may go into more depth than you need.