The schools then sell the tapes to students, faculty and parents for $20 to $30.
In 2007, the school sold the most remote field of its sports grounds, and this has been developed with apartments.
The school produces and sells what it calls an "online curriculum".
The school sells about 35,000 plastic eggs each year (800-628-5687).
The school sold the mansion and its furnishings to private owners in 1959.
In Texas, three high schools sold their naming rights for more than a million dollars each.
He said, "Eventually the school sold the house, and there is some confusion about exactly where it was located."
The school quietly sold the flag and letter to a private collector in 2000.
At these stores, high school and professional band jackets sell for $28.
The school has an art gallery where student work is displayed and, sometimes, sold.