The Mattapan Early Elementary School — with a first-in-the-nation Haitian Creole dual-language program for early education — has been recognized with a $30,000 prize that will help it grow and become a model.The Phil H. Gordon Legacy Award from EdVestors, a nonprofit focused on improving urban education, recognizes schools that are leveling the playing field for all students to learn.The school has been transformed, teachers say, from the once struggling Mattahunt Elementary School that has now closed, to a school where students are learning in two languages.