The U12 House Division plays 9v9 with a size 4 ball, in two 30 minute halves.
Celtic Soccer provides 2 jerseys and green socks. Players need black shorts, shin guards, cleats, and a size 4 ball.
US Soccer implemets new heading guidelines. There will be no purposeful head balls allowed in U12 and this should also not be taught in practice. http://usclubsoccer.org/2016/03/14/implementation-guidelines-for-u-s-soccers-player-safety-campaign-concussion-initiatives-heading-for-youth-players/
The offside law 11: OFFSIDES