We usually go to school an average of seven hours,if the businessses want to add two or three more hours to be in total ten hours taking out one day,and becoming just four days of school each day ten hours of work,In my opinion is going to be the same,because the two or three extra hours that they would add is the same that one more day of school;however,what is going to happen with the students that are in sports,have other activities or students that are in clubs,they will going home till night,I believe that is not good for anybody,they are not going to have time to do their homework for the next day,or an extra activity if they want during the rest of the day.