21st Parent Teacher Association Committee members
| Chairperson | Ms. Kimmi Lam（Parent of K2A Johnny Cheung，K3B Justin Cheung） |
| Vice – Chairperson | Ms. Joan Hu（Parent of K3A Irene Mok and K1A Hudson Mok） Miss Yu |
| Treasurer | Ms. Cheung Chun Ping（Parent of K3A Anna Li） Miss Wong |
| Secretaries | Ms. Ng Ka Po（Parent of K3B Ivan Ip） Miss Ng |
| Recreation Coordinators | Ms. Emma （Parent of Ian Chan） |
| General Affairs Coordinators | Ms. Vivian Su (Parent of K3A Ada He and K1A Cici He） |