I saw this: Washington - Foster built an "MBA Rankings Calculator" that combines various rankings and lets users pick the most important criteria to find the best programs for them:

http://foster.uw.edu/business-school-rankings

I'm not entirely sure how to use it or what the criteria mean. You can allocate points to factors like "average GMAT score" and "Job Placement Rate" but it's not clear to me what allocating points actually means in these contexts.

No matter, hopefully this is useful to somebody!

Nice tools but, self-interestedly, they have removed non-US schools from the data.