PRESS PHOTO BY C. RICHARD CHARTRANDA group of pirates will arrive at Eyer Middle School, 5616 Buckeye Road, Macungie to celebrate the 21st birthday of fellow pirate Frederic in the musical comedy “The Pirates of Penzance Jr.!” 7 p.m. March 17, 18 and 2 and 7 p.m. March 19. The show is directed by teachers Molly Magro and Jennifer Najarian. Lindsay Super is musical director. Najarian is also the