/// <summary>Saves a <see cref="Teacher"/> to disk.</summary>
/// <param name="newTeacher"><see cref="Teacher"/> to be saved to disk</param>
public static void NewTeacher(Teacher newTeacher)
{
JSONInteraction.NewTeacher(newTeacher);
AllTeachers.Add(newTeacher);
AllTeachers = AllTeachers.OrderBy(course => course.Id).ToList();
}
