Should I waive my FERPA rights in commonapp, and when I waive my FERPA right to one college, does it apply to all the other colleges too? Thanks
Yes, it is customary to waive your FERPA rights. This allows your teachers to write a more candid recommendation (some might even refuse to write one if you don’t waive your rights). It also means that if you do not waive your rights, colleges may question how honest the letter is. And yes, you only waive your rights once and it applies to all of them.
Yes, you should waive. @OrchidBloom said it all.