WikiIsNotaDictionary, but this AmericanCulturalAssumption may require some explanation for readers from elsewhere.
Schools are administered by School Districts. Sometimes they are coterminous with a city or county and sometimes not. Sometimes the elementary and high school districts are distinct. Sometimes it's complicated to determine what district you live in because the district will be named after a city, but its attendance area will not be identical with the city limits.
Some school districts have elementary school as K through 8, and then directly to high school for grades 9 through 12. The Chicago Public Schools are one example, at least when I attended. Some of the elementary schools did not have all grades K-8 attending, however.
ThankYou! I was always confused by this. But how does College fit in? It comes after high school, typically for one of 2 (Associated Degree), 4 (Bachelors Degree), or 7 years depending on what degree is being sought. The postgraduate degrees are a Masters Degree, typically an additional one to two years, and the Doctoral Programs, which can run from 3 years upward.
If you want to go into Medical or Law school, you need to get another degree first. In Canada, you only need to finish 3 years of another degree before applying (presumably you'll finish the degree before entering med school). Medical school lasts 4 years.
In Germany, you enter Medical school straight out of Gymnasium. Medical school lasts 6 years.
In Ontario, Canada, HighSchool is still five years, including one year of university preparation. This extra year is, however, on its way out so that we'll match the rest of the country's program. -- JbRainsberger
In Ontario, Grade 13, formerly known as OAC (Ontario Academic Credit), has been phased out. High school now consists of grade 9 - 12 -- PaulHaynes
In NewBrunswick?, Canada, Middle Schools cover Grades 6 - 8.