public class PrimaryStudent extends Student{

	

	protected int grade;

	

	public PrimaryStudent(String name, int age, int score, int grade) {

		super(name, age, score);

		this.grade = grade;

	}

	

	public int getGrade() {

		return grade;

	}

	public void setGrade(int grade) {

		this.grade = grade;

	}

}