1A group of people noted for their advocacy of a new set of methods, views, or attitudes in some field of activity; the methods, etc., of these people.
2Usually in form New School. Chiefly US. A liberal or progressive faction of a party or organization; specifically the section of the Presbyterian Church of the United States which was separated from the rest of that Church between 1838 and 1869 (now historical).
3Also new skool. = nu skool .
Early 18th century; earliest use found in Richard Blackmore (1654–1729), physician and writer. From new + school.