Educators should teach students who are introverted how to speak up in class, middle-grades teacher Jessica Lahey writes in this article. Lahey, an extrovert who teaches English, Latin and writing in New Hampshire, writes that she has studied the issue and decided to retain her class-participation grades despite opposition from some parents of children who are introverted. "As a teacher, it is my job to teach grammar, vocabulary, and literature, but I must also teach my students how to succeed in the world we live in -- a world where most people won't stop talking," Lahey writes.