This series of readers features adaptations of over 60 classic and popular literary works. Attractive and helpful illustrations clarify vocabulary and reinforce understanding of the stories, while questions and activities at the end of each book test understanding. Words essential to the story are explained within the text, illustrated, and then reused for maximum reinforcement. The books are graded at five vocabulary levels, ranging from 1,400 words (Intermediate) to 5,000 words (Advanced). Young adults from the Intermediate level upwards will enjoy reading the lively stories, and they can progress from level to level as their reading skills develop.