Children with additional needs are not getting the education "they rightly deserve" due to national recruitment shortages, a parent has said.
Pupils at a special needs school in Oxfordshire have been asked to stay at home on certain days due to staff shortages.
The Mabel Prichard School in Oxford wrote to parents in May about partial closures which have continued.
It said fully opening would result in a "high health and safety risk".
Pupil Matias Haywood, 18, who has profound and multiple learning difficulties, has been asked to stay at home for three days in the last few weeks.
The school told parents it had "devised a rota of closure" to ensure "no one class is affected more than the others".
Matias's father, Damian Haywood, who is also a parent governor at the school and a county councillor, said: "It's not just about caring for him, it's about actually properly educating him appropriately for his needs and his development."
He said Matias became upset when he realised he was not able to go to school.
