I have four tips that served me well in nursing school...
1) Show up for each and every class, lab, clinical, or whatever is scheduled. Do not miss class for anything but an emergency.
2) Pay attention during class. Stay focused and engaged the entire time somebody is teaching you something.
3) Take great notes. You will know which subject matter carries the most weight by how long your teacher spends on it. More time=more test questions.
4) Take your great notes home and type them up. Yes, it takes a long time, but as you go along you can look up things that may not have been clear to you in class. Before each test, I'd usually have 15-20 pages of typed notes to study from. Re-copying notes really reinforced the subject matter.
btw, I very rarely read the chapters from beginning to end. In fact, I only read the textbook if I needed to clarify my notes as I re-copied them. Occasionally I would look over the information in the "boxes" or highlighted sections in the chapter.
My average score on tests was 92%. I had a busy life outside of school and was quite content with my B average.