George Roberts has been teaching ninth-grade Earth science in Gardston, Iowa, for 10 years. This year, as chair of Gardston High School's science department, he agreed to have all the English Language Learner (ELL) students assigned to his classes. George's goal was to learn more about the needs of these students and arrive at a set of techniques he could share with the rest of his science team. Unlike many other science educators, George has a distinct advantage: The majority of ELLs at Gardston High School immigrate from a particular community.