Let's say you have a student whose name is Joel. He's the kind of student who doesn't make it easy for you to love him. But you try and you try, and eventually you do love him. He tries back, and finally it's December, and he still may not be turning in all of his assignments, but some of the ones he does turn in are pure gold.
Now, suddenly, his mom gets a new job in another part of town, and he has to switch schools. On his last day of school he is:
a) proud and all smiles, reflecting on how far he's come and saying goodbye to his friends.
b) a total demon from hell, reminiscent of the beginning of the school year.
In my case it's answer b). What happened?? Why, Joel, why?