•  Columban College Olongapo-Zambales Alumni Association  [Visit]   - The Official Website of Columban College Alumni Association. contain alumni news, forum, and info about the members, trustees, and the campus.
-www .columbanalumni .org/

•  Columban High School Alumni Grand Reunion 2001  [Visit]   - Home page of the Grand Reunion that took place on July 14 to 15, 2001 in San Diego, CA. The site has a message board, chatroom, announcements of upcoming reunions, and lots of photos of the event.
-www .cchsreunion2001 .homestead .com/

•  Columban High School Class of 1971  [Visit]   - Olongapo City, Batch of 1971. Keeping in touch with friends, chat, messages, photos, and announcements for upcoming reunions.
-www .cchs1971 .homestead .com