So if I'm being charged interest on my Stafford unsubsidized loans while currently attending, interest will not be accrued? What about private loans too? This

So if I'm being charged interest on my Stafford unsubsidized loans while currently attending, interest will not be accrued? What about private loans too? This is pretty sweet for currently attending students. I hope it lasts a while cause that save me tons while I'm back in school. Especially if I need private loans through like Sallie Mae.