In order to qualify for the GitHub Student Developer Pack you must be 13+ years of age and currently enrolled in a degree or diploma granting course of study.. An extra-curricular private class would not qualify you.
However if you are also enrolled elsewhere you would use your school graduation date and are welcome to apply at:
Your application is most likely to be quickly reviewed if you use a recognizable school-issued email address. To add an academic email address to your account, please follow these directions:
If you do not have a school-issued email address, or your application using a school-issued email address is denied, you may reapply using the "I do not have a school-issued email" drop-down option to attach supplementary photo proof of enrollment:
Make sure your photo proof of enrollment is official and is dated to show that you are currently enrolled.
Applications are generally processed within a few days, but may take longer in peak periods such as the start of a new semester.