School news and announcements newsfeed

Sounds like I am going to be put in charge of what was originally called a paper "newsletter". (Few people read those anymore.)  I've tried to persuade the parent/business wanting the newsletter than a "newsfeed" would be more likely to be read, and could be updated faster with breaking news.

To maintain work efficiency and yet get this done effectively, I would like to use Google. Surely there's a Twitter type of way to do that.