What bilingual schools in Bangkok offer EP programmes and can facilitate student and dependent visas for Chinese passport holders?

The user is looking for recommendations for bilingual schools offering an EP programme for their two 11-year-old children in the Sathorn area of Bangkok, specifying a preference for schools that do not charge high international fees. They also require information on the school's capacity to facilitate student visas for the children and dependant visas for their mother, who holds a Chinese passport.