org-capture-templates (quote (
    ("u" "University" entry (file+headline "school.org" "University") "** %^{Course Code} %^g\n + TITLE: %^{Course Title}\n + ADDED: %U\n%?")
    ("a" "Assignment" entry (file+function "school.org" course-code) "*** TODO %^{Title} %^g\n + ADDED: %U\n + DEADLINE: %^T\n%?")

(defun course-code (&rest junk)
  (interactive)
  (let ((str (read-from-minibuffer "Enter course code: ")))
    (read str)))