Grade 9.

It's a good book. Offers pronounciation, definitions, synonyms, and antonyms, as well as good practice. Chances are there are at least some words you'll learn from the book, even if you do well on the diagnostic test but I still suggest that you take that test to see if you should get a higher level book.

A comprehensive English test covering grammar, usage, composition, research skills, mechanics, and oral English

Collections of literary works and accompanying lessons covering conflict, autobiography, poetry, main ideas, short story, drama, subjective and objective writing, and mythology and folk tales.