In the UK, it’s generally quite easy to get a second chance these days… The whole education system is basically geared to make it super easy (and free!) to get the equivalent of a High School Diploma (GCSEs), whilst also giving a lot of support so you can get a level 3 qualification (through a learning loan if you’re over 24 think, which is basically a student loan which in turn is really more like a tax in the UK, as it’s written off by the time you turn 50 if you still haven’t paid it back).
That being said, it’s always preferable to stick with high school. It’s basically a meme these days for those who have left school to say “life was so much easier at school”, but it’s true. You’ll have more of an uphill battle to get to that level after dropping out, and the fact you chose to drop out will be factored into it. Also, America doesn’t seem as flexible for adult learners as the UK, at least from my understanding of the US education system.
Why not check in with your IT department/IT teachers and explain to them you’re learning from FCC? They might find it really cool you’re going out of your way to learn above and beyond the requirements for IT within school, and provide genuine help and support (as well as put a good word in to other teachers if you struggle with other subjects… They’ll realise it’s not because you’re not committed, as you can demonstrate all this extra work). They might even ask if you’d like to volunteer to help them out (which will look bloody brilliant on any CV). Also, why not look at volunteering in your community? I used to volunteer for a local Oxfam Bookshop’s online store, it basically required me to fill in the information of each book they wanted to sell online (generally the higher priced items), I actually got a lot of enjoyment out of it and felt Iwas helping make a difference in some small way.
Plus, school’s will probably get on your back much less if they see you’re doing a lot of stuff extra-curricular. A good teacher is wanting to give you the tools to live and work successfully in the real world, at the end of the day.
Even though I didn’t revise for exams and failed to hand in some coursework, I still ended up with grades good enough to get into university. I’m not one of these people that says they wish they’d done better either… I did the best I possibly could with my mental health at that time. At the least make sure your complete it, even if it’s not your best work. That’s my opinion!