During a reading lesson, Mateo, an elementary multilingual learner (MLL) in a Delaware public school, read “sit” as “seat.” Jon Kittle, his reading interventionist, walked him through the short vowel sound, but Mateo made the same “mistake” and grew frustrated. Kittle began to wonder if these “errors” were actually the result of Mateo applying what he knew from Spanish, where the letter “i” carries the sound of the English long “ē.”