High Quality Content by WIKIPEDIA articles! Temasek Secondary School (abbreviation: TMS) is an autonomous government, co-educational N/O-level preparatory secondary school of the Ministry of Education of Singapore and serves Secondary One through Five. It was founded in 1980 as Bedok South Secondary School and had its first class sit O-levels in 1983, TMS was located in Bedok, in the eastern part of Singapore before being relocated in the current premises at 600 Upper East Coast Road.