National University of Singapore, Centre for Nurturing Computing Excellence (NUS CeNCE) undergraduate computer science courses, CS0, CS1, and CS2, taught at NUS School of Computing (SoC) are now offered by SIMCC. These are video-recorded lessons by NUS professors with online assignments you can learn on your own schedule within in 2 months. You can compete in 2 of the 3 online courses with certificates and medals issued by NUS CeNCE.
These 3 courses help prepare you for the National Olympiad in Informatics (NOI), held every year online in mid-February and with the finals held at NUS SoC.