public static double convertGrade(String grade)
	{
		double numGrade = 0.0;
		
		switch (grade){
		case "A+": numGrade = 4.30;
				   break;
		case "A" : numGrade = 4.00;
		           break;
		case "A-": numGrade = 3.70;
		           break;
		case "B+": numGrade = 3.4;
		           break;
		case "B" : numGrade = 3.00;
		           break;
		case "B-": numGrade = 2.70;
		           break;
		case "C+": numGrade = 2.40;
		           break;
		case "C" : numGrade = 2.00;
		           break;
		case "C-": numGrade = 1.70;
		           break;
		case "D+": numGrade = 1.40;
		           break;
		case "D" : numGrade = 1.00;
		           break;
		case "D-": numGrade = 0.70;
		           break;
		default  : numGrade = 0.00;
		           break;
		}
		
		return numGrade;
	}