My wife is the principal of The Harbour School, a small (about 65 kids) nonprofit fully EDB registered school operated as a charity and located in Kennedy Town. It offers classes for K through P6 students. The reason I bring it to your attention is that The Harbour School still has placements available.
Although not a "special needs" school, The Harbour School does work with each child individually whatever their learning needs. In addition, the Harbour School's "sister" charity, The Children's Institute of Hong Kong, works exclusively with children on the autistic spectrum and, whenever possible, provides mainstream experiences for these kids in The Harbour School classrooms.
If you are still looking for a place for your child, consider calling The Harbour School and arranging a visit.
Phone: (852) 2816-5222
Website: www.theharbourschool.edu.hk
Email:
info@theharbourschool.edu.hk