Administrators are teachers too. Whether it's filling in for a teacher or leading the building during staff meeting or development, the process can be similar.
Moodle is an option for administrators to keep all of their resources, and 'teaching' materials, in one place. For the upcoming staff meeting, send an email with a link to a few articles to read beforehand, all located on a Moodle site. When other administrators send resources that are worthy of saving, setting up a folder on Moodle keeps them organized and easy to share whenever needed.
If parents are interested in keeping up with news and events, setting up a calendar will keep everyone up-to-date. When email questions continue to fill up the Inbox, set up a wiki where other parents, teachers, or students have the option of answering!