text: Not only should the students have to use it, the teachers should have to use it as well. Some people might wonder " Why would the teachers have to use it, they aren't the ones learning?" Ill tell you why they should have to us this facial emotion dector. If the teachers are grumpy all the time or, if they aren't happy at there carrer, they need fired. Now tell me this. If the teachers are always mad and hate there job, how do you expect the students to learn if the teacher is mad all the time. They'll just throw a paper at them and tell them to work. With this new equipment, you can use it to see if a teacher is happy. You can see if the teacher can make the class fun so the students will be happy.