Here's the scenario: I've turned in my notice at my current job, but I can technically still get my last semesters grad classes reimbursed through the company tuition reimbursement program before I leave. Is it stupid and petty to turn the tuition reimbursement form in for the $2500 when I'm leaving in a few weeks?
an important rule when you leave a company is to do what you can not to burn bridges. especially so if you're at a point earlier in your career, which i'm guessing you are as we're discussing tuition from your graduate classes. the idea behind tuition reimbursement is that your continued education is mutually beneficial to both yourself and the company you work for. in your example, the only one benefitting from the education that you received and that they are helping pay for, is yourself.
you never know when in the future you're going to run into someone from your current company and you don't know everyone that the people you currently work with know.