Different:
U.S.- religion is not taught in public schools
Spain- religion is taught in public school, with an option for parent to have their child attend that topic
U.S.- addressing a teacher: Ms./Mrs./Mr. Last name
Spain- addressing teacher: First name only
Similarities:
U.S.- Average years of schooling: 12 years
Spain- Average years of schooling: 7.3 years
U.S.- Children out of primary school: 1.76 billion
Spain- Children out of primary school: 7,575