While moleskin refers to the skin of an animal called a mole, that is not the most common meaning for the term. The most common is a heavy napped cotton twill fabric that is extremely soft. The fabric is woven and then sheared to cause a soft, short pile on one side of the fabric.
One thing that stood out to me is that freshmen are given the option to take AP Human Geography, as opposed to Civics and Geography, which has been the only option in the past for the required 9th grade social studies credit.
AP classes mean Advanced Placement classes, which are more difficult than regular classes, but also count for more. If you take them in high school, you have the option to take the AP test, which, if you do well, will allow you to exempt part of your college course for that subject AP is short for Advanced Placement. After taking an AP class you can take a test that, if you score high enough, can give you college credit.