Java Average Score Calculation Program Please help me.

[eraed]

Enter a name, enter grade, and enter 7 test scores.
A program that calculates average test scores.
I'd like to get the average, except for the highest and lowest scores. How should I do it?

import java.util.Scanner;

public class StudentDemo {
	Scanner s = new Scanner(System.in);
	Student[] stList = new Student[10];
	int cnt = 0;
	public static void main(String[] args){
		StudentDemo demo = new StudentDemo();
		demo.doit();
	}
	void doit() {
		Student st = null;
		while (true) {
			st = new Student();
			st.read(this.s);
			if(st.name.equals("end"))
				break;
			stList[cnt++] = st;
		}
		for (int i = 0; i < cnt; i++){
			stList[i].print();
		}
	}
}
class Student {
	String name;
	int year;
	int[] score = new int[7];
	float avg;
	void read(Scanner s){
		name = s.next();
		if(name.equals("end"))
			return;
		year = s.nextInt();
		for(int i = 0; i < 7; i++)
			score[i] = s.nextInt();
	}
	void print() {
		int sum = 0;
		System.out.printf("%-5s (%d) ",name, year);
		for(int i = 0; i < 7; i++){
			System.out.printf("%3d", score[i]);
			sum += score[i];
		}
		System.out.printf(" => %5.1f%n", sum/3.0);
	}
}