It's the day of Cosmo's big wizard test. With his books and wand, he knows he can pass, but what will happen when he forgets the magic word Written by Jill Atkins, this educational Early Reader book is book band Purple (aimed at 6-7 years, Year 2).The colour grading system is recognised by the Institute of Education which reflects the reading difficulty. The book content, language style, phonics and layout are taken into account to determine this.