That's an excellent idea.
Collaboration is an essential part of professional development.
In fact, I encourage participants to help each other on assignments. Peer feedback is an important course component. This course will be offered worldwide to teachers who are able to access the resources of the WWW and e-mail. If a participant will be busy with parent teacher conferences or out of town at a conference for a day or two, it's not a problem. The words at the top and bottom of each module page are hot , meaning if you click on a word, you will open that section of the module.