text: Attending online classes at home means that there isn't a teacher there, in person, to help you. Having a video conference with a teacher is completely different from being in a classroom with one. Making it harder for people to understand what's being taught to them. Taking a class like math online would be difficult for the students who take longer to understand certain problems. Sometimes they need the teacher to explain a problem in multiple ways before they can understand it. Being online, where it's harder to communicate, would definitely make the information harder to understand.