public ActionResult SaveNewTeacher(Teacher teacher)
{
teacherService = new TeacherService();
subjectService = new SubjectService();
staffService = new StaffService();
// adds it to the teacher's list and the staff's list
teacherService.AddAndSaveNewTeacher(teacher);
subjectService.ChangeTeacherInAListaOfSubjects(hireTeacherSingleton.getSubjects(), teacher);
return(RedirectToAction("Index"));
}
