These are requirements for students in the USA. Please talk to your high school guidance counselor your HS classes are as rigorous as possible for your academic ability.
In high school, you will need to take classes required to get into almost any college or university in the States.
They are usually:
English: 4 years
Foreign Language: 2 years of one language
Mathematics: 3 years, including algebra I, geometry, algebra II (If you are applying as a Pre-Med student or business student require Pre-Calculus or further mathematics - Calculus, trigonometry, etc. Check with each college you intend to apply to.)
Science: 2 years (Usually take another year of science, especially a science with a lab IF you intend to major as a pre-med or science student.)
Other Courses: 5 other academic courses
Total: 16 academic courses
Check with the colleges or universities that you are interested in now to see what they require for you as a high school student.
On a college application, the fact that you continued to take classes that were not required or AP classes shows academic initiative.
To become a lawyer or a doctor you would be required to have a Bachelor's degree from a college/university.
Here is a surprise twist, you can be any major in college so long as you have the pre-requisite classes. Pre-Requisites are required classes to get into medical school.
They usually include Biology - (I and II with lab), Chemistry (I and II with lab), Organic Chemistry (I and II with lab), Physics (I and II with lab), Calculus I and a Statistics,
You are required to take the MCAT.
An example would be Johns Hopkins School of Medicine:
Law school does not have pre-requisite college classes but know law school includes a lot of writing and reading. You are also required to take the LSAT.