The NSW Education department has released its latest "disability strategy" (download here).
In relation to autistic students, it says:
autistic students are 33% of "students supported by funded programs distributed by disability type 2017" in NSW (students with intellectual disability make up 40%).
"From 2013-17, enrolments of students with autism increased by ~14.5% per year" according to the Education Department's own data ... at this rate, the number of autistic students doubles every 5 years.
Autism Aspergers Advocacy Australia (A4) wrote to Minister Fletcher and NDIS officials saying A4 is concerned that NDIS support for autistic participants is often inadequate.
Table E.10 in the NDIS Y6Q1 Quarterly Report shows again that close to 29% of NDIS participants are autistic. Figure E-5 from the report and a similar figure from The Australian (see both figures below) indicate to us that for autistic participants: