The Western Sydney School for Children with Autism, established in 1985, caters for children aged 3 to 16 years. The school is located in Sydney's western region, covering a broad geographical area. The school is Aspect's largest and spans seven separate sites, with satellite classes in Richmond, Blacktown, Marayong, Fairfield West, Smithfield and Minto, which includes a special school facility located at Wetherill Park.
An additional satellite class has recently been established on the premises of St Andrew's Holy Family School in Marayong. This is the first secondary satellite class within a mainstream school.