Around 20 pupils at Henry Whipple School sent home in row over hair spray . They had painted their pupils bright red to raise funds for Comic Relief . Parents at the Nottinghamshire school branded the decision ' ridiculous ' School says they have never allowed children to use coloured hair spray . strict rules protect pupils ' behaviour , school resource and those with allergies .
Around 20 pupils at Henry Whipple School sent home in row over hair dye . They had sprayed their hair bright red to raise money for Comic Relief . Parents at the Nottinghamshire school branded the decision 'ridiculous ' School says they have never allowed children to use coloured hair spray . Claim rules protect pupils ' uniform , school resource and those with allergies .