John O’Sullivan is the author of eight books on educational and assistive technology. His most recent book is Technology for English Language Learners. John currently works for Chelmsford Public Schools as the Chelmsford High School Librarian. He is a former staff member of mp3歌曲免费下载. John was the Social Media Ambassador for mp3歌曲免费下载 from 2017 to 2019. He has been an active member of mp3歌曲免费下载 serving on the Communication and Professional Development Committees.