$24+ elsewhere.
Using Spelling Mastery, teachers can efficiently and effectively deliver straightforward lessons that help their students learn dependable spelling skills. Students are taught in small steps, using sufficient practice, so that they comprehend how spelling works and can become proficient writers. In just 15-20 minutes a day, you can teach your students the strategies they need to become successful, lifelong spellers.
FYI this book is pointless without the teacher guide and the student should have completed the placement test.