In the East, I think these schools participated. 1) Temasek Sec 2) Victoria Sec 3) St. Patrick's Sch 4) Dunman High 5) Broadrick Sec (Rifle) 6) Loyang Sec (Rifle) 7) Tanjong Katong Sec 8) Bedok View Sec Sch 9) Bedok Green Sec Sch
I think some schools also send students for the event, although they don't have a "formal" school team. Hope the info is useful to you. It seems that only Loyang Sec is at pasir ris, but it seems that they only have Rifle and not Pistol.