How long does the school year in the US last?

American students usually attend and elementary school in their neighborhood. The school year usually runs from early September to mind-June. School days last from Monday  to Friday. Classes start at 9 a.m and finish at 3 p.m. Students have a two week vacation, a one-week spring vacation and two month summer vacation.. Elementary school programs consists of language arts, history, geography, maths, science, music, art, physical education and heath. In big cities, many students live close enough to walk to and from school and come home for lunch. However, most elementary school have a canteen. Students can go there at break-time. They can buy some snacks and drink there.
1. How long does the school year in the US last?
2. What time do classes finish?
3. How many vacations do students have a year?
4. How do students in big cities get to school?
5. When do students go to the canteen
6. Do you like American schools? Why/Why not?