Korean Job Discussion Forums

[mahaju]

Hi
What is the validity period for the Social Integration Program (사회통합프로그램)?
The program gives 3 certificates in total:
Level 4: Korean Language Ability (KIIP-KLT)
Level 5: Korean Society and Culture (KINAT)
Completion certificate (이수증)

Official copies of Level 4 and level 5 certificates were sent directly from mail, while the completion certificate can only be printed from the KIIP website after logging into your account
Non of these certificates have a validity date on them

For how long are these certificates valid?
If I want to apply for the point based F-2 visa later, how long can I put off the application after getting the Social Integration Program certificate?

Is it ok to apply after 1 year? Or is it better to apply as soon as possible?