AoPS Online Schoolhouse
The AoPS Schoolhouse is the system used for MathJams and online school. The main instructor (also a classroom admin) is responsible for posting the learning materials, while other classroom assistants serve as backup if the instructor is not present or answer questions posted by students. For example, in The World’s Largest Countdown Round, there were 17 classroom assistants.
Posting
If the chatroom is moderated, which is always the case during MathJams and usually the case during class, when students type things into the chatroom, the message goes to the instructors. From there, the instructors have the choice of sharing the question with the class, whispering an answer back, or doing nothing. Your post will show up in the classroom in your preferred color (you can change this in the settings) if it is chosen. Other people's chosen posts will show up in a blue(or gray) color. If you get a reply back in a whisper(a text just for you), it will show up in a pink or purple color(Or the color that you are typing in). If a moderator feels a question requires further discussion, they will open a mini window with you to more deeply discuss the question.
Character Limit The character limit for posts in the AoPS classroom is 623 characters. You can split your posts into two to bypass this limit. There is no limit for the number of posts you can send. However, you could get a warning for posting spam messages. (You can't post the same thing twice in a row.) You could also get a warning if you post messages too fast.