Media playback is unsupported on your device Media caption Kelly often misses school because she is worried about leaving her mum unattended

Nearly a quarter of a million children in England and Wales are caring for a relative, new statistics show.

Figures from the ONS suggest 244,000 people under 19 are carers - about 23,000 are under nine.

The Children's Society warns this is likely to be "the tip of the iceberg" and that children's education and job prospects could be damaged.

The government says schools have a "key role in supporting young carers".

YOUNG CARERS Aged 18 years or under

Provide regular or continuing care and emotional support to a family member who is physically or mentally ill, disabled or misuses substances

Becomes vulnerable when the level of care-giving and responsibility to the person in need of care becomes excessive or inappropriate for that child

According to the ONS (Office for National Statistics), there are 149,000 young carers aged between 15 and 19 - about twice as many as in the 10-to-14 age range.

Girls are slightly more likely to be carers than boys. Among 15-to-19-year-olds, about 5% of girls are carers and about 4% of boys.

The Children's Society is calling for more government support and recognition for these young people.

It says in England, one in 12 young carers spends more than 15 hours a week looking after a parent or sibling, that one in 20 misses school and that they are 50% more likely to have special educational needs or an illness.

In its report, called Hidden from View, the Children's Society says: "Many young carers remain hidden from official sight for a host of reasons, including family loyalty, stigma, bullying, not knowing where to go for support."

The study, funded by the Big Lottery Fund, analyses government data that tracked 15,000 children in England aged 13 and 14 between 2004 and 2010.

GCSE results

It found young carers had "significantly lower" educational attainment at GCSE level - the equivalent to nine grades lower overall - than their peers.

The study found average annual income for families with a child carer was £5,000 less than families that did not have a young carer.

Young carers were more likely than the national average to be "not in education, employment or training" (Neet) between the ages of 16 and 19.

Young people from black, Asian or other minority ethnic communities - and for whom English is not a first language - were twice as likely to be a young carer.

KELLY, 17, HAS CARED FOR HER MOTHER FOR 12 YEARS From an early age I've had to get up about 06:00 or 07:00 to give her her tablets and breakfast and get my sister ready for school. Then I've got to go to college and come home to make sure she's all right, give her dinner, tidy up the house before I have to give her all the tablets. Then I've got to get my sister ready for bed and I have to get my mum's medication ready and get her ready for bed before I can get rested myself. There's times where I've missed homework or I've had to stay at home because I'm not comfortable with leaving my mum at home because she could leave the cooker on or she could pass out and we might not be able to wake her up and there's no-one there to look after her while I'm not there sometimes. I've had a lot of difficulties communicating with other people and especially why I can't go out very often and I fell behind at school quite a lot because of it. I missed loads of revision so I had to resit a lot of exams while I was in secondary school. I sometimes wish that I wasn't so stuck to helping but I don't mind helping as much because she's my mum and she's always there for me.

The Children's Society says that, despite improved awareness of the needs of young carers, there is no strong evidence that young carers are any more likely than their peers to come into contact with support agencies.

The report says: "Children must be allowed to thrive and enjoy their childhoods, not be forced to take caring roles that are too often inappropriate."

Children's Society chief executive Matthew Reed said: "Our new analysis shows that caring can cost children dearly. They are missing out on their childhoods and school, gaining fewer qualifications and therefore are less likely to earn a decent living.

"All children must be allowed to thrive and enjoy their childhoods. One young person remaining under the radar, out of sight of the very authorities there to support them, is one too many."

Disabled parents

A Department for Education spokeswoman said: "Schools have a key role in identifying and supporting young carers. We must ensure that every child has the opportunity to meet their full potential.

"We recently announced that young carers will be involved in the training of school nurses, so they know exactly what support they should offer and can champion their needs.

"We are also funding the Children's Society and Carers Trust to encourage children's and adult's services to adopt 'whole family' approaches to supporting young carers and we have created a specific training guide for teachers to help them to better identify and support young carers."

The Disabled Parents' Network says it is important to remember that behind every young carer is at least one parent with a disability.

A statement on the charity's website says: "DPN rejects the notion that disabled parents are a problem to be solved.

"It is a simple fact that if disabled parents are provided with the support packages to which they are statutorily entitled, then there is less need for their children to assume the role of 'young carers'."