All of the above is the answer
They usually have the supplies to administer a shot, a blood pressure machine, the little tool light the use for checking the eyes, ears, nose, mouth. They also have gowns and tongue depressors for checking for strep throat.
I think that drugs and their affects would be interesting to learn about, because its a big issue in our world today, and it's good to learn about these things (such as drugs/alcohol)