SCGS takes in very little PVs because they feel very bad to make their PVs serve 40hours (min) and risk not getting a place in 2B. There were 37 applicants in 2B for 2011 registration exercise of which only 11 were PVs (i think). The rest were Grassroots Leaders. 40 seats for 2B last year.

2012 will see balloting definitely as there are now a lot of parents serving in grassroots.
1km address will definitely help if one is serious about getting into SCGS.