Mary Negrete teaches Grammar Lab for UC San Diego Extension's Copyediting Certificate Program. She has over 20 years of experience teaching ESL, basic composition and grammar at the community college and university level. She also teaches Spanish to English translation and works as a freelance translator from Spanish to English. Negrete has been teaching in the UC San Diego Extension Translation and Interpretation Certificate programs since 2001. She is an academic coordinator for these programs. She also teaches Grammar Lab for the Copyediting Certificate Program.