There is a microwave, hot water and a fridge at the school for you to use if you want to bring your own food. There is also a coffee machine.
There is a small supermarket next door to the school where you can buy food and drink. There is also a sandwich shop about 5 minutes from the school. If you want to venture slightly further and walk to Kirkstall Road, there are many shops, cafes and supermarkets. This is about 10 minutes on foot. Ask the office staff and they will be happy to help you.