There is not just ONE school schedule in Mexico. In different cities the schedule can be different. Even in one town there are many different schedules I live in a town of 80,000 and 1/2 hr from the state capital with 3/4 million people. There are dozens of public and private schools. There are many different schedules. In public school, kids only go 1/2 day through 5th grade. Usually there is a morning session from 8 to noon. Then there is an afternoon session for a different group of kids from 2 to 5:30 or 6. Kids in elementary school do not have a lunch break, just recess. Secondary is like middle school and the kids go for about 5 hous...can be 8 to 1 or 9 to 2. Prepatoria is high school. There are many schedules. In the public school, some kids go 7 to 1:30, other kids go 2 to 9 in the evening. Evening school is not unusual at all. Kids in secondaria and prepatoria have a break at about 9:30 or 10 for breakfast. I know that sounds strangs, but in Mexico, people just have coffee or juice and a sweetbread when they get up early. A traditional breakfast is eaten between 9 and 11 in the morning. Then they do not have unch til 2 or 3 , and the kids are home from school then. Private schools can have different schedules. Some have a program where kids go only on Saturday and do work on their own during the week. This is for high school kids who need to work. Another thing, I have never seen an elementary kid walk to school without an adult. A parent or grandparent or aunt or neighbor ALWAYS walks kids to school til they are about 11...kids never walk alone.