Do you have a class list, preferably in a spreadsheet? If so, we can import it and make all your classmates members of the alumni assn. Preferred format is a spreadsheet with at least these columns: First (given) name(s), e.g., John Robert or Jane Marie; Surname, e.g., Smith, Martinez, Huang, Mankongvanitchkul; (maiden surname if different, or another surname by which you were known at school); Class year, four digits, e.g., 19xx or 20xx; Gender, m/f; Electronic mail, e.g., example@tchsalumni.org. Your classmates can add their own addiitional contact data, which will not be published, but it will remain available to the class coordinator. We can also do bulk e-mailings to your class. More information is here.