Crabtree School is quite simply the best primary school in the whole world. Everyone says so. In fact, it's so wonderful that last year's Year Six class won't leave! Now those pesky eleven-year-olds are clogging up the whole school. If Ava and her friends want to start Year Three properly they are going to have to make Crabtree a lot less lovely. Join dreamy Ava, super-spy Lottie, maths whizz Zoe and head girl Isabel as they make plans to ruin their perfect primary! 6+ readers will love this first Crabtree School story about friendship and adventure.