Source:
https://scmp.com/article/683440/plan-well-what-may-be-difficult-time-adjustment

Plan well for what may be a difficult time of adjustment

When it comes to choosing a good international school on the mainland, parents are urged to research online before relocation, although some relocation companies might be able to provide relevant information. Parents should confirm if a school is properly accredited by a world-recognised agency and check if it is a part of a wider educational organisation.

A visit during school hours, taking in the classes your child will be in, is often the best way to determine if a school is the right choice.