Should you always go to the school with better employment numbers if you will have no debt at graduation

Always?

No. There are other factors one should consider.

Not if the better school is not T14 and is not in a region you want to practice in.

No, I think you need a rosetta stone to understand a lot of the employment numbers. Also, I am not aware of any school that has 100% reporting on employment numbers.

Employment prospects, region you want to practice in, and cost are the most important factors

I agree with this, and I would add that quality of life factors during school should be given some consideration, although it would be fairly low on the list.

I would look at employment # trends also as opposed to a single year of statistics

Agree with the board here. Debt and employment prospects are the most important factors (and I'm including location in employment prospects, since it's a factor), but they're not the only parts of the equation. Sounds like you've got the basic idea though.