General question: Seperate controller or a function???

[eluser]123wesweat[/eluser]
I am looking for some advice.

user> user_profile> education
user> user_profile> work


should i make

Code:

class user_profile extends controller {
............
function education($action) {
case "add":

break;

case "update":

break;

}

function work($action) {
case "add":

break;

case "update":

break;

}

or make a controller for education and work??