Group+3+Clue+2

DW206 would be the name tile outside Mr. Wood's classroom. If you look closely it can be removed. Under it, the next clue:

Group 3 Clue 3

You are almost to freedom, friends!

Specific jargon was popular during the Underground Railroad. They concealed the real meaning of important things and places. The Underground Railroad used many railway metaphors. For example, "conductors" were the people helping the slaves escape, hiding places were called "stations," and runaway slaves would be "passengers" or "cargo."

Using this analogy, what would the routes be called? Say this word to one of the "conductors."