First off its not 18 months its 24 months.
I've explained to you already the method to become licensed and it's blatant enough from my explanation that you have to work as a fitter in order to become licensed.
so no way to become licensed whilst studying in a college merely without being in the field, you have to jump through hoops to get it, And even if you used to work as a fitter or a certifier and had a license before going for the degree course you have to be current and consistant in the line otherwise your licence expires.
I don't know why you're not listening to me and you keep reiterating the question, is there anything ambigious in what I said above?