How I Use It
I've used Weebly to host a personal blog, posting a Google calendar for class project due dates, and to blog to communicate with parents, as well as to post resources for students for specific assignments.
I can see how this product could be used for whole classes. I've only used it as an information site for students and parents. it's easy to use, and the features are pretty robust at no cost. The only problems I've had were using the contact-me page I set up-- the district, hotmail, and gmail blocked those messages every time, even after I set up a "safe" entry in my contacts. It has something to do with the way Weebly interacts with your address to send you mail.