“But that brings up a point that regionally, say in Washington state, a degree from WSU, UW or WWU, may get you many more job offers than say, Williams, Univ of Mchigan or Georgetown.”
Sure. But if you want a job in DC or Philly or NYC or Chicago, talking about “U Dub” is going to get you a lot of blank stares. Schools that are at the very top of the prestige heap will work in lots of places in lots of different regions. That is a very typical pattern you see in law firm hiring.
All the swanky law firms in any particular city will recruit/hire students from the exact same T14 national schools. But then that firm (or that particular office of that firm) will also recruit at the local law schools too. Since those local schools will be a little lower on the prestige scale, the firms will require applicants from the local schools to be higher ranked (class ranking being yet another “signaling device”).
A top 10% student from Fordham Law can get hired at most swanky NY law firms. But that student will have a tough time getting a job in Chicago or LA. Even at the Chicago or LA office of the exact same firm that would hire them in NY.
But top 50% from Harvard Law is a strong signal everywhere. Because Harvard Law is very selective/prestigious.