Philip Pocock Catholic Secondary School (alternatively called as Philip Pocock, PPCSS, PP, Philip Pocock CSS, or Pocock) is a Roman Catholic high school in Mississauga, Ontario, Canada. It is operated by the Dufferin-Peel Catholic District School Board and has approximately 1,350 students. The school includes an Extended French Program as well as an Advanced Placement Program for Mathematics, and the Sciences (Biology, Physics, Chemistry). The school building is similar to that of St.