This is what it says for people over 18http://www.connectionsacademy.com/indiana-online-school/FAQs/enrollment-faqs.aspx#4
There is a chance that you might be able to go through this program. there is a phone number to call and ask if you are 18 or older.
How do I enroll myself if I am 18 years old, or older, or am an emancipated minor?
Students who are 18 or over must meet age eligibility requirements in their state. Students must also submit academic documentation of all courses attempted since entering the 9th grade. Academic documentation will be reviewed by a school counselor to determine the student's eligibility to complete the program requirements before meeting the age cap for enrollment. Students who cannot complete the program requirements before meeting the age cap for enrollment are not eligible to enroll.
Both emancipated minors and students 18 years and older are required to complete the Parent/Legal Guardian (Caretaker) Acknowledgement (PLCA) form and to provide all required enrollment documentation before the student can enroll. Emancipated minors must also submit court documentation for their emancipation. Please contact the Enrollment Team at 1-800-382-6010 for more information.
I never made it to 9th grade and have no clue what the age cap is. I will have to call them and find out what the age cap is.