public static void ManageStudents(User user)
        {
            Console.Clear();

            Console.WriteLine("Hantera studenter");
            Console.WriteLine();
            Console.WriteLine("1. Visa student-information");
            Console.WriteLine("2. Ändra student-information");
            Console.WriteLine("3. Sätt betyg");
            Console.WriteLine("4. Lägg till student");
            Console.WriteLine("5. Ta bort student");
            Console.WriteLine("6. Visa studieresultat för en student");

            Console.WriteLine();
            Console.Write("Ditt val: ");
            string menuChoice = UserInput.GetInput <string>();

            switch (menuChoice)
            {
            case "1":
                ShowStudentInformation();
                break;

            case "2":
                UserManagerPresenter.ChangeUser(UserLevel.Student);
                break;

            case "3":
                GradePresenter.GradeStudentInCourse(user);
                break;

            case "4":
                ClassListPresenter.AddStudentToClass();
                break;

            case "5":
                ClassListPresenter.RemoveStudentFromClass();
                break;

            case "6":
                ShowStudentInformation();
                break;

            default:
                break;
            }
        }
 private static void PrintStudentInfo(User student)
 {
     PrintUserInfo(student);
     GradePresenter.ShowStudentCourseGrades(student);
 }