 In the 1970s, there are three classes for each academic year.Based on the colours of traffic lights, they are Hijau (Green), Kuning (Yellow) and Merah (Red).Originally an all-boys primary school, Sekolah Rendah Kebangsaan (2) Simpang Lima finally became co-ed when two girls (Ms Sheila Devi Harikrishnan and Ms Norabani bt Ab Rashid) were admitted for Standard 5 in 1981.