From their website:

A project that teaches primary school children about potatoes. With almost 1 million primary school children benefiting from this classroom experience linked to the UK curricula, children learn how potatoes grow and how they fit in to a healthy balanced diet. All you have to do is register your school to receive a FREE potato growing kit, use the supporting lesson plans and worksheets and for a chance to win fabulous prizes for your school, enter the competition once you have harvested.

As a home-educator you are still eligible to register for a free growing kit at Grow Your Own Potatoes: http://www.gyop.potato.org.uk

This is a fantastic opportunity from the Potato Council (worth visiting as well – separate website from GYOP) and the GYOP website contains Teacher Resources that you can use for your children to learn all about potatoes.

They also run a competition – so get registered as soon as possible as registration closes on 1st February 2013.