public virtual double GetGPA(char letterGrade, StudentType studentType)
{
int result;
switch (letterGrade)
{
case 'A':
result = 4;
break;
case 'B':
result = 3;
break;
case 'C':
result = 2;
break;
case 'D':
result = 1;
break;
default:
result = 0;
break;
}
if ((IsWeighted == true) && (studentType.In(StudentType.Honors, StudentType.DualEnrolled)))
{
result++;
}
return(result);
}