Getting GRE Test Vouchers/Waivers?

[Theevidentevaluator]

I recently just got an email from the LKY School about them offering GRE vouchers for high performing students. Is this something other schools have done for students in the past? I am definitely taking advantage of LKY's voucher and would love to know if other schools have made them available for prospies.

Also, I've seen that some people in this forum have gotten GRE waivers from some schools. If you've been one of the lucky few, how have you gotten a waiver? Would you have to demonstrate high performance as well, or show that you can't make it to a testing center (e.g. you're a current PCV)? 

Edited October 9, 2018 by Theevidentevaluator