Tanya, I am with you 100%. When I was at school there was a girl whose oldest bro looked after her & her younger sister as the parents were (not very responsible or normal) they expressed themselves with teased & coloured hair. The girl in my class was told to brush her hair down or she couldnt do sport, so her bro wrote a letter saying she would not comb down her hair as it was her right to express herself & if that meant NO sport then she simply would not attend sports class.
It lasted about 8mths & then all of a sudden the school gave in & she was no longer judged or made to look like the rest of us!!!

Maddy has pink streaks thru her hair & the Principal asked if it would wash out? Maddy said No, it's dye, the Principal told her it looked... Nice!
Having had a converstaion wheN maddy was starting prep regarding Religious Instruction (although not being all religions but just Catholic) I disagreed & so the Principal knows I will have an opinion. Also she's seen Dh pull up in his singlet & shorts on his Harley to pick Maddy up after school, so I think she's not gonna say anything!!! LOL
I heard another Mum has apparently said "Great, now all our kids are gonna want coloured hair!" When this moron approaches me I will tell her my child is an individual & I applaud that & we discuss her choices to be different, if she chooses for her kid to not ahve coloured hair, I certainly wont be sticking my 2 bobs worth in, so she should learn the same!
I think you should get as many parents etc to write a petition & say... Students are there to be taught & learn, not be forced to fit a common mould, their individuality is a MAJOR part in confidence & learning so stupid ass rules about hair colour, jewellery & piercings is just that Stupid!

Maddy wears a cheap silver chain around her neck with some hideously tacky diamante's that have MD (her initials) one of her friends bought her & noones ever said she cant! It's wrong to make boys not wear necklaces & girls to be allowed! That is sexist & your boys should be able to petition that too!