This is the Kanji for the name of the Main art we teach at the dojo. There are two names for the art, Kosho Ryu Kempo and Kosho Shorei Ryu. Depicted here and on the high place we have Kosho Shorei Ryu.
This means Old Pine Tree School Of Fist Law/Natural Law. Each part of the individual charators mean something. Here is the breakdown of Ko and Sho.