I pretty much dropped out of high school the last mandatory year by taking classes that didn't have exams and breezing through knowing I already had university

I pretty much dropped out of high school the last mandatory year by taking classes that didn't have exams and breezing through knowing I already had university entrance through a scholarship. But honestly I regret it often as I missed out on extra STEM learning that I ended up having to teach myself anyway. Going to university a year earlier wasn't an option so I feel I was let out early with no oversight, at a time when my brain was a sponge.