To go to any university in the United States, You must have graduated high school.
The pros of going to a university is a vast option of invaluable relationships, and you will have a great choice for a job with a degree. The cons is that it may leave you with a debt that will take a long time to pay off
Collage Or University (2 Years)
To go to any university in the United States, You must have graduated high school.
The Millitary
To join the military, you must pass a physical exam, and be well prepared for the task.
A pro is that after joining the military for 4 years, they will pay for university, a con is that the military might not be for everyone as it is a hard task.
Trade And Certificate Programs
You will also need to graduate high school to be able to go to trade schools.
The pros are that they are less demanding then colleges, you stay less, and pay less. The cons are that it may be harder to find a job, and you wont be able to take other academic classes
Gap Year
The pros are that you will have a year to think about what you want to do, and it gives you a chance to see the real world. The cons is that re-joining school will be challenging to remember and start again.
Work
You will need to do job interview and have a good work experience to get certain jobs.
The pros is that you will get a cash flow, and the cons is that you might have a hard time getting used to the work life.
There are no requirements for a gap year, but it is suggested you finish high school.