Hello, the Addison Wesley wkbook is Grade 1, the "Money" workbook is Grades 1-3, the Everyday Math book is Grades 6-8, the Standards Number & Operations book is Grade 8, the Science Annual hardback 2005 seems to be a high school edition, the larger Spelling book is a Teachers Edition Level 6, and the Multillanguage Support book is in English and 2 other languages and has no grade level.....and we thank you for your question! :o)