More and more of my schools are using Google Calendars this year to manage staff events, PTA events, a meeting calendar, classroom daily agendas and more. One strength of Google Calendars is the ability to keep a large number of non-related calendars connected to your main Google Calendar.
Gigaom.com published a nice description of this process at http://gigaom.com/apple/ipad-quick-tip-enabling-multiple-google-calendars/ . The secret ingredient is half way down the page in the paragraph about adding multiple calendars. After you login to your gmail account, go to www.google.com/calendar/iphoneselect and simply click on the calendars that you wish to show up on your mobile Google Calendar app.
Coming soon: How would you like to also see your Lotus Notes Calendar on your Google Calendar? Notes Traveler will soon be available to teachers in the district. Stay tuned.