The United States public school system involves, in order, kindergarten (for five years old children), followed by grades 1-6 (elementary school), grades 7-8 (middle school), grades 9-12 (high school), undergraduate studies (also known as going to college or university), and sometimes people can then go to graduate school for a Master's or other, higher degrees after that. Before kindergarten, it is not uncommon to send the child to pre-school.
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