the name of the select is HTML, and so should be "dept", not "$debt".
You may also need to use $POST['dept'] or $GET['debt'] (depending on the method of your form) on the next page, since your global variables could (and probably should) be off.
Also the name of the option comes from the select that it's under, so you cant try to call it "1" when it's already taken the name "select".
This really isnt a php problem though - get a book on how to write HTML and have a look at that, cos it will save you a lot of time: trying to make php generate HTML is always pretty tricky when you dont know what HTML it is you're trying to generate.