Please help me to write a function for this requirement!

Hi,
    I have created a stored procedure which accepts 2 input parameters (param1 & param2 ) and its output is 'Score'

Eg:
Exec uspScorecalculation StudentID,DeptID 

output: 85

Now, My requirement is , I want to populate this value as one of the columns in a 'Select' statement.

Can you please give me some input like how can i write a funtion to retrieve this score from the procedure and use it in the select statement?

I assume,  the funciton should pass the two parameters into the stored procedure 'uspScorecalculation'  and retreives the Score.

Can you please help me on this?

thanks!