I just read a post where the author used the term "schoolhouse" several times in reference to a United training center facility. I don't care what you call the training center but I have to ask why you guys get so upset when the 737 is referred to as the Guppy and yet, you call the training facility "schoolhouse".

After all, "schoolhouse" get more questions and laughs than Guppy.

What is the origin of the "schoolhouse" term for a commercial airline training center?