I like to ask about international school for my children, age 3 years old, 5 years old and 10 years

You may think about Guangdong Country Garden (IB World) School. It is a nice international shool located at the Bigui Garden, Beijiao Town, Shunde District. Well, this area is also nice to live in. Since your son has Asmatic, you need to pay attention to the weather forecast and prepare proper clothes for him. Additionally, the air at this area is clear which is better for him.