Kain Ball is not allowed to return to his class at Wyken Croft Primary School in Coventry unless his mini mowhawk cut - made famous by dashing dad David Beckham's locks 10 years ago - is lopped off.
Kain's mum Hannah, 24, who is a hairdresser no less, has been angered by the school's decision following the hair cut last week.
The school head disapproves of the cut as it is apparently too extreme and against the school's policy.
She said: "The first thing I heard about it was when Kain's class teacher ran up to me when I collected him from school to say the head teacher's got a bit of a problem with Kain's hair.
"She said she didn't have a problem with it herself. I didn't know what the problem was, so I thought I'd just leave it. But when I went back to the school on Friday, his teacher said the head teacher said his hairstyle's extreme and that it's against the school's policy so he can't go back on Monday unless it's cut.
"I was very shocked because I couldn't see anything wrong with it. Kain is autistic and is scared of having his hair cut. He goes into a fit. I think his hair style is smart. I'm going to stick to my guns."
"I just said to him, 'What's wrong with Kain's hair that you want me to change?'" says Hannah. "He said it's too extreme, that it was against the school's policy and when Kain joined the school I signed an agreement that pupils aren't allowed extreme hair.
"Kain's hair's not extreme. It would be extreme if his hair had five-inch spikes and was dyed green. I've been a hairdresser since I left school and have cut thousands of children's hair in the same style.
"I've asked other parents at the school and they don't think it's extreme. Even my dad, who's quite old fashioned, thinks it's stylish. I always send Kain to school in a clean uniform and looking smart.
"Because he's autistic, it's difficult to find anything that will make him happy. His hair makes him happy. Why should it be taken away?"
Although it sounds like the family have a battle ahead of them. Commenting on the hair cut, headteacher Derek Gardiner said: "The school has had a clear policy on hair for a long time. It's part of our prospectus and when you accept a place in the school you agree to accept that.
"I'm concerned that Kain is not in school, because he has special needs and we've worked hard to support him in a good quality learning environment."
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