Depending on what you want to do and how overqualified for school you are, a GED is a valid alternative to graduating IMO. That said, you potentially lose a lot of social interaction and sports/clubs which I found to be the most valuable parts of high school.
Personally I was easily able to get 3650 on the GED (out of 4000) which is enough to automatically get into state schools. I have no clue how it would work at a more prestigious school, but at the time that really wasn't something I was concerned with.
I don't feel qualified to say whether it was a good idea because I dropped out after I ended up in foster care (long story, my parents kicked me out after I told DHS about some incidents). Regrettably I wasted several years after this doing nothing but smoking weed and playing video games due to a general lack of motivation. I'm back working on stuff now after quitting games altogether - splitting focus is apparently an impossible task for me.
