The "French Is Fun" series, specifically Book 1, is designed as an introductory course for students typically in middle school, often around grades 6-8 (ages 11-14). Some schools may also use it for slightly older students in high school as a first-year French course. The book aims to introduce basic French vocabulary, grammar, and culture in an engaging and accessible way, using illustrations, exercises, and activities to reinforce learning. The content is structured to cater to beginners, with a focus on everyday vocabulary and simple sentence structures.