Currently doing AS Levels, (1st year) in the UK, Im doing maths, computer science and economics. I know Ive failed maths already -> chances are I have to do a retake year, but I wont be able to do CS, maths or eco again.
There are also MCOOs (edx) that have certifications courses you can take for free. Tons of computer science, and even AI certs. Its a good way to build knowledge if you plan to dropout. Harvard/google and other major companies and universities upload there courses. Youll only need to pay for the actual certification when you finish. All self paced, all online. Website is well done and feels like an actual college course too. Highly recommend it