Submit button does not validate and submit form

Hey all. My form is playing some strange tricks on me, and I wanted to run this by you guys to see if this is a problem anyone else has had before, or if I just need to keep checking my code for bugs.
I call drupal_get_form on a function called gradprofile_edit_profile. Instead of just building the form in this function, I check a student type that was passed in to gradprofile_edit_profile and call one of two other functions that returns a form customized to the type of student that is passed in, like this.

function gradprofile_edit_profile($csid, $show_status = false) {
	$new_student = new GradStudent($csid);
	$new_student->populate_student_from_database();
	if ($new_student->student_type == 'Masters') {
		return _get_masters_profile_edit_form($new_student, $show_status);
	}
	else if ($new_student->student_type == 'PhD') {
		return _get_phd_profile_edit_form($new_student, $show_status);
	}
}

My submit button generated by the form does not work anymore. It just reloads the page, but no validation is done, and the values are not submitted. I make sure to check wether it is a PhD or Masters form in gradprofile_edit_profile_submit, but I went the code through with a debugger and this function is never called. Is this because of how I am generating my form, eg by not just building it in gradprofile_edit_profile, or is it my own dumb fault somewhere else in the code?
Much obliged -
Jergason