April 10, 2023 Day in lieu – Nuzul Al-Quran and Easter Sunday Qosmo International School Petaling Jaya
April 24, 2023 - April 25, 2023 Days in lieu – Hari Raya Aidilfitri Qosmo International School Petaling Jaya
July 15, 2023 - August 2, 2023 First Summer Camp & Summer Day Care Qosmo International School Petaling Jaya