รายละเอียด(อย่างย่อ) Jill Korey O'Sullivan has worked in the fields of English as a second language and literacy acquisition as a teacher, writer, and editor. She has taught and developed materials for students of a broad range of levels and in a variety of educational settings, including kindergarten, middle school, community college, and adult education programs. Ms. Korey O'Sullivan holds a Masters Degree in Education from Harvard University.