Before:

boolStatus = true;
do
{ 
    cout << "Please enter whether this student is in-state (i/I), out-of-state (o/O) or qualified graduate (g/G)?" << endl; 
    cin >> status; 
    status = tolower(status); 
	     
    if ('i' == status || 'o' == status || 'g' == status) 
         boolStatus = false; 
} while( boolStatus );