Here's a link to our website page with the PTO Newsletters on it.
The first thing is to determine when & how often you want to publish your newsletter.
We set ours up as a means to thank people for helping at events as well as informing everyone of what's coming up. I try to throw some fun fact/trivia as article separators. I also try to use lots of clip art. Pictures even simple ones - add a lot to the newsletter. Ours comes out a couple of weeks after the Principals. This way it's not coming all in one stack and they compliment as reminders for what's up & coming.