class Michael {
  public static void main(String[] args) {

    PersonTeacher michael = new PersonTeacher("Michael");

    michael.introduceYourself();

    String tmpGrade = new String();
    for (int i=9912345; i<9912360; i++){
      michael.gradeStudent(tmpGrade.valueOf(i));
    }
    michael.say("Take care.");
  }
}