text: In conclusion, there are many different ways that students could benefit from being able to attend classes from home. Some students should take online courses because it is easier to concentrate on an assignment when the student is in a comfortable and quiet learning environment which could be at home. Students can also take online classes to help them succeed in a subject that they have a hard time in. Overall students can benefit from taking an online course.In this essay using the technology system "Facial action coding system" the emotional expression of students in a classroom can be valuable.