Puerto Rico is not a state of the United States, nor is it a country of its own.
All people who live in Puerto Rico, yes, are citizens, but they don't have the right to vote for anyone who is running for president.
There are three groups on this topic; One group wants to keep on being a common ground place and keep how they are. And much smaller group wants to become a state in the United States so that they can have the rights to vote like all of the other citizens in the United States. An even smaller group then that wants to become its own country.
School is compulsory for all residents of Puerto Rico between the ages of 6 and 17. Children usually attend primary school for the first six years of their education; secondary education is divided into two cycles of three years each. In public schools, all tuition takes place in Spanish; English is taught from kindergarten to high school. There are some private schools where the language of tuition is English, and some international schools, too. Most of them are located in or around San Juan and Ponce.