An angry Mandurah mother has lashed out at the state government after being told a specialised education program at Halls Head College has been axed.

Late last year, Wannanup resident Sally Finlay said she was told her autistic son who had attended the Halls Head College Targeted Learning program, would have to find alternative education because the program would not be offered in 2018.

Mandurah mum Sally Finlay is angry at the axing of a specialist program which helped her son Shaun, who is pictured along with older brother James

The program for year one to nine students offered support for autistic children that included smaller classes and customised learning plans.

Ms Finlay said her 13-year-old son Shaun was bullied when in mainstream education and the thought of him going back to it was "horrifying".