Bringing school supplies to Thailand?

Gifts are always appreciated and it's not about whether they're useful or what it costs. The gesture that someone takes the trouble to think of such a thing is very much appreciated in my experience.
Whether it is ultimately of any use is another question because some school supplies such as pens, pencils and erasers are sponsored by the government every year at my son's place… whether there is a link with the Central Group will probably remain a secret.

Just don't. School materials cq. stuff comes in such a wide variety, maybe 100 times if not thousands times as much (made in China, Japan or South Korea)
as in the Netherlands, and also much cheaper. Also do not give to the school because then a fake invoice will be made for this and the money will disappear from the school budget. If you know school children, it is better to take them to a random store, always find gadgets or small toys or hangers for the school bag or for the school pencil case, let the children choose it for themselves and pay at the cash register. For the rest, it remains difficult to judge whether the children need it. Visit an orphanage then it will end up in the right place because yes no parents who give the children all kinds of things, this seems to me the right place to play Sinterklaas. Or else you better help the Ukrainian children in the Netherlands, on average the standard of living was already lower than Thailand and now that they have often left everything behind because of the war, it would be better to buy something for these children.

I would then opt for a donation to an organization, Huib.
After a bit of searching, I came across a reasonably focused club called globalgiving where choice and explanation are reasonably clear.
You can reasonably assume that those people have a better view of the whole through their presence.
There are more of course.