Yes, that is why they are called "Graduate classes"
Maths, English and Science
you need to be in a advanced maths class as you need to learn as mu8ch maths as you need to.
Probably Physics, Chemistry, Biology and Maths
You will need to take at least 15 credits of classes per semester. You also need to make sure you are focusing on classes like Biology, Chemistry, and Physics.
Take as many math classes as your high school has to offer. Then take more math, as well as business, accounting and economics courses when in college. For the top level jobs, move on to graduate school, and finish your education with a Ph.D. in Economics.
They aren't astronauts when they are in college. Typically, once they graduate from college they enter graduate school in specialty areas, or go into the military flight programs. There is no specific degree or courses that equate to being an astronaut. (umm... you actually need a bachelor's degree in engineering, biological science, physical science or maths)
sports cooking art woodwork maths and english. but not science or health and fitness
It depends on your family. You don't graduate like you would in high school. Some families do use credits, while others just say, "okay, you took all the classes and did well. Congrats, you graduate." The easiest way to say it is, technically, you don't need credits.
Not many. Reading is very important and it'd be quite difficult to pass all of your classes without reading. You need to study, do questions, etc. Especially because English classes will require you to do some reading.
You do not need CPR to graduate from High School. Those in the health care profession need CPR to pass some classes; so for those people, a CPR certificate is required.
You will need a law or justice major and need to take the classes the college requires to graduate. Get a college catalog and talk with a counselor on what to take and when.