Thanks for all you feeback. I will be in SG next week and I will definitely pay a visit to Pungool. If you have any additional inputs, I would really appreciate.
The exact name of the road is edgefield plains (the primary school location). If you do not know how to get to the school, take MRT to Punggol station. From Punggol station, walk towards a group of ORANGE COLOUR flat direction (you can see it if you exit from the bus terminal direction and not the other exit). You need to pass by two traffic junction inclusive (one before the group of ORANGE flat). The second traffic light is after you passby the group of ORANGE flat. After you pass by the second traffic light, turn right immediately (keep your eyes on flats on the left) and walk towards flat that is blk 196 (as long as blk 19# you are at the right direction). You will see a bus stop shelter (behind is a basketball court). Go up to the basketball court (the staircase) and head straight (you will walk a downward slope and on the left there are few lift up bar and sit up bench exercise area). Behind the green fence (in front of you), there is a building and it is edgefield primary school.