If you're in highschool, I think regular school is better. It gets harder to teach you the right things as you get older, without havving a teaching experience and stuff. I used to be homeschooled, but only in elementary, because my mom who homeschooled me didnt know how to teach me correctly once I got older.
For high school I homeschooled. It depends on which homeschooling program you do. I graduated and got a diploma with the one that I did. On some other homeschool programs you do not receive a diploma. Instead, you get a GED. I think you should continue going to your school though. Just work harder and ask for extra help.