text: In conclusion I think that the principal should let all students take at least one extra curricular activity just because if how fun it is. Taking an extra curricular activity means that you can make new friends and best friends,do something that you didn't know you were good at till now and become popular and active,and be famous just like other famous people around the globe. But one the other hand people just seem to not care. In conclusion I think that the principle should let students take at least one extra curricular activity but not make it a rule so that other people will not feel uncomferable and forced to take an extra curricular activity.The Facial Action Coding system is valuable in the classroom. This technology can tell how a student is feeling even when they do not say it, which is good becuase some students may feel unfortable telling the teacher or class they do not understand the material. Not only does the system know when a student is confused, it also works on everybody and is very accurate.