You have presented a good mystery here Gene. I've been googling like crazy over this.
One thing that comes up for St. Laurence, Northfield in 1909 is that they started their first scouting troop there. I don't see how that connects to "Ake ake kiakaha" though. There do seem to be some Rugby connections to the time and motto, but nor to Northfield. The best clue might be found if we can ID the logo in the center that looks like the initials C.H.H. It looks so familiar for some reason, but i can't place it.
