The periods in most classes,at the secondary level is 52 min. Most core classes have a guide that they have to follow. There is no way they can follow this guide, complete all that has to be completed in the classroom. The purpose of homework is to reinforce what students learn during the day. In most countries the school year is 220 days, ours is 180 days. Any teacher with several years of experience will tell you that the year should be longer. The lenght of the day should be the same. It a shame that teachers are blame for all that wrong with the schools. What about the role of the parents, students. Where is their responsibly? Core teachers do not have time to teach other than what they are suppose to teach.