Depends on schools. Some dont have this programme, some need you to register way before first, before they shortlist you for volunteering.

My mum did about a year before I was entitled as my sis was already a student there

Actually I was a parent volunteer for 6 years when my son was in primary school

you are kidding me. why is this necessary

I thought the schools will ask you to?

1 year is good amount of time!

pero di naman kailangan talaga

ridiculous. is that necessary

Not sure what is a good timing

A few months before enrolment.