Why is school 8 hours long?

Answer 1

to learn for 6 hours and to have break with your mates and lunch to eat if their was school for 2 hours you would not learn much and have to stay at school in the summer holidays

Answer 2

Actually that varies from country to country, and in part from school to school. Here in Bolivia, my children went to school about 5 hours a day, 5 days a week.