Firstly, no one has to know. There is no required or forced exposure in the Academy so you can keep this as private as you like.
If happens, that by your error you get caugth to someone then best you can do is to be confident about it. Think of it as like this: when you go outside next time and look people: how you'd feel if you found out they were a sissy, submissive, bondage slut or loved getting paddled. I guess you wouldn’t judge them. Because you are progressive, open-minded being. And as a society we should all strive for these qualities. Some are simply falling behind.
Being embarrassed is totally natural, admitting your feelings, admitting embarrassment and admitting your curiosity should be a shortcut