Okay kiddo, have you ever heard of a school called the School of the Americas? It's a school in the United States that trains soldiers from Latin American countries.
Now some people think that the school teaches these soldiers some really bad things, like how to overthrow their own governments or how to torture people. This makes these people worried that the soldiers who graduate from the school could use what they learned to hurt innocent people in their own countries.
That's where the School of the Americas Watch comes in. They are a group of people who want to make sure that the school teaches good things to these soldiers and doesn't encourage bad behavior. They monitor the school and speak out when they think things aren't going as they should.
So, the School of the Americas Watch is like a team of superheroes who want to make sure that soldiers from Latin American countries are taught good things and that they will protect the people in their own countries.