Maximum PC

namespace scheduling
{
   // if this is a base class, you might change it to protected (I think).
   // because in this case, you won't ever have a "person" object that isn't
   // a teacher or a student.
   public class Person
   {
      private string _FirstName;
      private string _LastName;
      
      // Other common "person" attributes, address, phone, etc.
      
      // Create your public get and set functions
      public string FirstName
      {
         get { return _FirstName;}
         set { _FirstName = value;}
      }
      
      // Constructor
      
      // functions
   }
   
   public class Teacher : Person
   {
      private string _Department;
      private string _EmployeeID; //guid? int? whatever it is use the appropriate datatype
      private int _YearsOfService;
   
      // Ditto
   }
   
   public class Student : Person
   {
      private string _Major;
      private string _Minor;
      private string _StudentID;
      
      // Ditto
   }
}