I say - who knows? I think a lot of it, from both sides, is speculation. Getting hired at all is such a gamble right now anyway, that it is really hard to say. It will vary from region to region, and from district to district! Some districts in my state pay nothing or next to nothing for a master's, so it absolutely wouldn't make a difference in those situations. Everyone has their own opinion on this, and it's really up to you to decide for yourself, IMHO.