'When I get hungry, I find it hard to concentrate'
Almost half of schools in the UK offer food support or free school breakfasts so children can get food which they otherwise would go without.
But charities have told Newsround that more children than ever before will need support from them this summer to have enough to eat.
Hayley went to speak to some schoolchildren about what it's like to go without the food they need and how being hungry can affect them.