I've solved it. If you setup an dummy account, license sketchup, and then copy the ~/Library/Application Support/sketchup folder to the system default user folder, any new account comes up with sketchup licensed.

It looks like the Mac licensing information is stored per user. How can I setup a lab computer so that all users of a mac (all new users, pulled from AD) have a licensed copy of sketchup pro 2014 when they log in? [we have a multi-seat educational license]. We have account switching turned off, so there will only ever be one user at a time. I haven't yet found where the authentication info is stored. If I can find that, I can script getting that file to the correct location for new users using a login script. Or is there is a way to place the license file centrally (inside the app bundle, or in /Library/ )? Thanks.