Any of the
International Schools have high school levels available: United World College(UWC), Singapore American School(SAS), Overseas Family School(OFS), Tanglin, Canadian School, German, Australian, etc. For one HS student you are looking at approx. $22,000 per year, not including books and uniform. All schools seem to have waiting lists at the moment. Look further in this forumn for other discussions related to schools and check each school's websites for more information. Welcome to Singapore and Good luck!