static string ReplaceNoise(string input)
        {
            string[] noise = new string[] { "the", "an", "a" };

            foreach (string n in noise)
            {
                if (input.ToLower().StartsWith(n))
                {
                    return input.Substring(n.Length).Trim();
                }
            }

            return input;
        }

        static void Main(string[] args)
        {

            List<Book> schools = new List<Book>{
                    new Book{ ID=9, Title="The Nines"},
                    new Book{ ID=6, Title="A Six Company Strategy"},
                    new Book{ ID=3, Title="An Age of Three"},
                    new Book{ ID=2, Title="Two's Company"},
                    new Book{ ID=709, Title="The Sevens"}
            };


            //foreach (var item in schools.Select(x => new { NewTitle = ReplaceNoise(x.Title) }).OrderBy(n => n.NewTitle))
            foreach (var item in schools.OrderBy(n => ReplaceNoise(n.Title)))
            {
                Console.WriteLine(item.Title);
            }


            Console.ReadLine();

        }