Programme for Rebuilding and IMproving Existing schools (Abbreviation: PRIME; Simplified Chinese: 重建改善现有学校计划) is a programme initiated by the Ministry of Education in 1999 to upgrade and rebuild existing school buildings in Singapore to provide a conducive learning environment for the students.

Flexible School Infrastructure (FlexSI)

Implementation of PRIME
Launched in May 1999, PRIME was estimated to cost S$4.5 billion and is implemented in phases. As of February 2007, 235 schools have been included in the earlier eight phases of PRIME. Of these, 203 schools have completed their upgrading. To date, S$2.374 billion had been spent on this programme.
Eight more schools will be upgraded from 2008 to 2010 under Phase 9.

Kong Hwa School
Tampines Primary School
Cedar Girls' Secondary School
CHIJ St Theresa's Convent
Shuqun Secondary School
Saint Hilda's Secondary School
Tampines Secondary School
CHIJ St. Nicholas Girls' School Phasing
Where feasible, a school will remain on-site while construction work is carried out for either upgrading or rebuilding. Otherwise, a school will move to a temporary holding school as in the case of Yishun Town Secondary School, while upgrading or rebuilding is carried out at its present site.

On-site Rebuilding & Upgrading
Where a vacant site is available, the new school will be built on this site. The school will relocate to the new site once the school building is ready.