YSK if you use Canvas for your online classes, that your exact home address could be viewable by default by all your classmates. You can change that, though, and just show your city (or nothing at all).
from /r/YouShouldKnow
YSK 如果你使用 Canvas 进行在线课程，你的确切家庭地址可以被所有同学默认查看。但你可以改变这一点，只显示你所在的城市（或者根本不显示）。