These books are set on the island of Madagascar where the endogos live, an as yet undiscovered species of pygmy human beings. These books, by the creator of the successful weebee reading scheme for very young beginners, have been designed for older beginner readers. The illustrations are an integral part of the literacy journey of the reader, allowing opportunity for discussion and language development.
The research-based approach focuses on the recognition of just one hundred key words that together make up approximately two-thirds of all reading matter in English. For each new book, twenty new words are introduced and listed at the beginning of each book. The key words being introduced are listed at the back of each book together with suggestions for word-pattern study. There are currently eight books in the first series of the endogo books. By the end of this series, the reader will know more than the thirty-six words that make up one third of all reading matter in English written narrative.
The UK National Literacy Trust has stated that there is "overwhelming evidence that literacy has a significant relationship with a person's happiness and success," (Literacy Changes Lives: An Advocacy Resource, 2008). Low literacy rates are associated with higher rates of crime, the cycle of poverty, and dependence on welfare. In the UK in 2024 eighty-five percent of juveniles who interacted with the courts were functionally illiterate. According to the National Literacy Trust report in 2024, sixteen percent of adults in England are functionally illiterate. The endogo books have been created to appeal to older beginner readers and those who are functionally illiterate.