We publish the number and proportion of pupils with special educational needs (SEN), including the type of need in the annual ‘SEN in England’ statistical release:
Pupils with SEN are recorded according to their primary type of need. Autistic spectrum disorder (ASD) is included as a type of need.
The table below shows a breakdown of the number of pupils with ASD as their primary type of need from 2015 to 2018 (as at January each year):
Statements of SEN & education, health and care plans
Source: School Census