using System;

public class Program

{

    public static void Main()

        {

            //determine what grade a studen is in based on age

            int age = 0;

            string grade;

            Console.Write("Please enter your age:");

            age = int.Parse(Console.ReadLine());

            switch (age)

            {

                case 5:

                    grade = "kindergarten";

                    break;

                case 6:

                    grade = "1st grade";

                    break;

                case 7:

                    grade = "2nd grade";

                    break;

                case 8:

                    grade = "3rd grade";

                    break;

                case 9:

                    grade = "4th grade";

                    break;

                case 10:

                    grade = "5th grade";

                    break;

                case 11:

                    grade = "6th grade";

                    break;

                case 12:

                    grade = "7th grade";

                    break;

                case 13:

                    grade = "8th grade";

                    break;

                case 14:

                    grade = "9th grade";

                    break;

                case 15:

                    grade = "10th grade";

                    break;

                case 16:

                    grade = "11th grade";

                    break;

                case 17:

                    grade = "12th grade";

                    break;

                default:

                    grade = "Currently not in school";

                    break;

            }

                Console.WriteLine(grade);

            Console.ReadLine();

            }

    }