CKSians took 4 of the top 5 places in the Philippine competition of the 2015 Watercube Cup Overseas Chinese Singing Competition last June 14 at the FFCCCII auditorium. High school batch 2009 alumnus Jayson Alexander Kiong (黃俊雄) emerged as champion, while recent high school graduate Herc Ang (洪漢盛) took 3rd place. Rounding up the top 5 were Erika Chan (曾怡妮) from grade 10-A who won 4th Place, and high school batch 2015 alumna Jemilyn Kaw (許利文) who bagged 5th Place.