Perhaps this can help you? Copied from
http://www.vog.gov.sg/StaticContent/FAQ.aspx
Question: How do I know if my diploma qualification is acceptable
for employment in the Singapore Civil Service?
Answer: The entry requirement for diploma positions in the
Singapore Civil Service is a polytechnic diploma. Diploma
qualifications from our local polytechnics are acceptable entry
qualifications for the Civil Service diploma positions.
For overseas diplomas and other local diplomas, the standard and
rigour of these programmes must at least match those available in
our local polytechnics to be considered as meeting the entry
requirements for diploma positions in the Civil Service.
One year diploma qualifications offered by local private
institutions are generally not considered as equivalent to local
polytechnic diploma qualifications for purpose of Civil Service
appointments.