FIRST is a middle and high school robotics competition targeted to get young people interested in STEM. Each season, teams have a 6 week build period which they build, test, and program robots, before competing with local teams.
FIRST is an international competition of students at 4 levels:
FIRST Robotics Competition (FRC) for high school students,
FIRST Tech Challenge (FTC) for middle school and high school students,
FIRST Lego League (FLL) for middle school students
FIRST Lego League Junior (FLL Jr.) for elementary school students