@Eileen ******
My Thai daughter, white with some Thai features, a beauty, attended a private school (Jindapong, Bangkok, if I remember correctly). From age 4 for 6 months. She spoke Thai, the first language she ever learned.
She was shunned by other Thai kids. Even hated. There were no other foreign or mixed marriage kids that I knew of. She stood out although her Thai was native, same as other kids.
We had to stop that, Thai wife and daughter joined me in Japan, then International school.
Otherwise we would have sent her to Bangkok Pattana International school.