Max if you only want a year or two education is very easy because it's all super corrupt. But because of THAT it can be difficult to switch to something else if you decide to stay forever.
not really. They do have the burning season which is not great, but in BKK there is pollution all the time. Outside of burning season the north is very clean. And it's not... Tacky... The way Pattaya is.
just know when they say you need to buy insurance they are lying to get you to spend money and earn a commission. Just go somewhere else until you find one that doesn't have shit instead of ethics.