As a reading teacher, we teach our students to annotate text pieces and it would be neat if that could be somehow integrated without having to set up additional accounts. For example, in Google Docs, we are able to highlight text parts and make comments off to the side about them. This would be a great addition within Schoology.
The other idea I have that I feel would be neat would be if students were able to fill in charts and tables, again without having to go to another outside source. Essentially, the students could complete assignments within Schoology.