We do not need an extra year of high school. High school is already to long and what is an extra year really going to do for us. As a senior you are already taking easy classes or you are not at school for half the day taking college classes.
An extra year of school would also cost a lot of money. It would cost the school a lot of money because of the extra students who will need different books and more lunches. It will also cost more money for parents. They'll have to pay more student fees and take care of there kids longer before they leave for college. Then the school will either become poor or they'll have to pass levies that will raise taxes for the district area.