MOE对此的规定如下:http://www.moe.gov.sg/education/admissions/primary-one-registration/
In a small number of cases, there may be situations where the families are unable to remain at the address used for registration for the entire duration of the child’s primary school studies. Even so, a child who gains priority admission into a school through his/her distance category is required to reside at the address used for registration for at least 30 months from the commencement of the P1 registration exercise on 2 July 2015. If this condition is not met, MOE reserves the right to transfer the child to another school with vacancies, as the priority admission to the first school was based on the declared address used.