Mrs. Gelinas teaches Honors Chemistry and AP Chemistry. She has been teaching at Downingtown East High School for 10 years. Prior to that she worked as a chemist, technical manager, and in various technical marketing positions at DuPont.

Mrs. Gelinas has a bachelors in chemistry from Stonehill College, an MBA from the University of Delaware and a masters in 21st century teaching and learning from Wilkes University.

Mrs. Gelinas is advisor for Science Buddies, a club that hosts 4th graders from Lionville Elementary school to run experiments.