"I am still getting educated" is grammatically correct and sometimes said but we dont use it in this context. I usually use it to mean "someone is berating me for a mistake or telling me how I am wrong" used with a negative sentiment. I would say "I am still pursuing my education" for the context you are looking for.

Being educated is a life long process to get oneself better. It may not involve studying. "We are always being educated even by small and trifle things in life". "getting an education" means to study... This is what you want for your question.

It's grammatically correct, but not natural. In formal situations, you could say 'in education': for example. "Jack is exempt from income tax because he's still in full-time education". In more informal situations, you can just use one of these simple phrases: I'm still at school/college/university (BrE) I'm still in school/college (AmE)

Thank you.

I think Merlyn meant to write "I'm still going to college/university". You should lose the 'the' but keep the 'to'.