Object and Class/Student2

using System;
using System.Linq;
using System.Collections.Generic;
using System.Globalization;
using System.Numerics;


namespace fundamental14
{
    class Student
    {
        public string FirstName { get; set; }
        public string LastName { get; set; }
        public string Age { get; set; }
        public string HomeTown { get; set; }
    }

    class MainClass
    {
        public static void Main()
        {
            List<Student> students = new List<Student>();

            string input;
            while ((input = Console.ReadLine()) != "end")
            {
                string[] data = input.Split();

                string firstName = data[0];
                string lastName = data[1];
                string age = data[2];
                string homeTown = data[3];

                if (IsStudentExisting(students, firstName, lastName))
                {
                    Student student = GetStudent(students, firstName, lastName);
                    student.FirstName = firstName;
                    student.LastName = lastName;
                    student.Age = age;
                    student.HomeTown = homeTown;
                }
                else
                {
                    Student student = new Student()
                    {
                        FirstName = firstName,
                        LastName = lastName,
                        Age = age,
                        HomeTown = homeTown
                    };

                    students.Add(student);
                }
            }

            string city = Console.ReadLine();
            List<Student> filteredStudent = students.Where(s => s.HomeTown == city).ToList();

            foreach (Student student in filteredStudent)
            {
                Console.WriteLine("{0} {1} is {2} years old.", student.FirstName, student.LastName, student.Age);
            }
        }

        static bool IsStudentExisting(List<Student> students, string firstName, string lastName)
        {
            foreach (Student student in students)
            {
                if (student.FirstName == firstName && student.LastName == lastName)
            {
                return true;
        }
        }
        return false;
    }


        static Student GetStudent(List<Student> students, string firstName, string lastName)
        {
            Student existingStudent = null;

            foreach (Student student in students)
            {
                if (student.FirstName == firstName && student.LastName == lastName)
                {
                    existingStudent = student;
                }
            }
            return existingStudent;

        }
    }
}