Cathedral High School offers an optional online book buyback from May 14-June 14ththrough ETechcampus. This service is for hard cover or paperback books and does not include consumables such as a workbooks or access codes. To find out more, please visit cathedralhigh.etechcampus.com and select the SELL NOW option. After you enter the 10-13 digit ISBN number the website will provide you with a buyback quote. Free shipping is provided. Please email Gara Schommergschommer@gocathedral.com with any questions.