Top Definition
A 9 month prison sentence that must be served 12 times in a person's lifetime in order to receive a Certificate of Indoctrination, also know as a High School Diploma. People who do not receive this certificate will be alienated from society, and laughed at by their peers. Usually served from age 6 to age 18 (US).
Rick: I'm in the middle of my 11th School Year.

Jim: Respect man, I quit that shit after year 10.

Rick: What?! Man, nobody's gonna hire you with that record!
Jim: I don't mind, I became a carpenter, and now live happily within my means.
by Fisherman1234567890987654321 December 31, 2014

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