SINGAPORE - Media OutReach - 9 September 2022 - Boutique International Primary School Razum International School has marked its fourth year of operation by rebranding as ASTOR INTERNATIONAL SCHOOL. The rebrand took effect on 15 August 2022, the first day of the 2022-23 academic year. The school's new website at www.astor.edu.sg is now live with the new branding. The school's.