Great question. Actually there is no one answer to this question. But here are a few suggestions or likely candidates: Homeschooling parents may find Lucy helpful in teaching the fundamentals of English composition to their teenagers. The program was designed with that use in mind. Beyond homeschoolers, Lucy will benefit anyone who did not pay close attention to English composition in high school, or was shortchanged because if Covid or other reasons, and did not learn the basics of good composition. Lucy also will benefit college, and law or graduate school students who feel the need to tune up their English composition skills to improve academic performance, or their prospects in the job market and the workplace. Finally, Lucy also might be considered a remedial course in English composition for anyone regardless of age or station in life who feels the need to become more proficient and confident in their composition skills.