Conversation so far:
Did Cameron Crowe write Fast Times at Ridgemont High?
His book, Fast Times at Ridgemont High: A True Story.
When did he write the book?
came out in 1981.
Was it popular?
CANNOTANSWER.
When did it get made into a movie?
Released in 1982, the movie version.
Who starred in the movie?
featured no major name stars.
Are there any other interesting aspects about this article?
At the age of 22, Crowe came up with the idea to pose undercover as a high school student and write about his experiences.
H?
CANNOTANSWER.

Question: How long was he undercover?
Self-contained rewrite: Is posing undercover as a high school student where Cameron Crowe got inspiration for his book?