24 August 2015 – Two Grade 4 pupils from the Philippines placed a distinction for receiving gold awards at the Singapore International Mathematics Olympiad Challenge (SIMOC) on August 16. Filbert Joseph Ubanos and Filbert Ephraim Wu, the latter having achieved a perfect score, joined Rezaev Kamaal from Uzbekistan as the top three winners in the fourth level category of the competition. SIMOC 2015 drew 405 pupils from second grade to tenth grade, from 13 countries and territories, including Bulgaria, Cambodia, Indonesia, Hong Kong (China), Kazakhstan, Malaysia, Myanmar, Philippines, Pakistan, Singapore, China, Uzbekistan, and Vietnam. Contestants had to answer 25 questions in 90 minutes. SIMOC 2015 followed the Singapore and Asian Schools Mathematics Olympiad (SASMO 2015), which took place in April 2015. SASMO was held in each participating country, and winners compete at SIMOC. END