Whereas the Structure & Style Basics course is aimed at teachers, Andrew Pudewa's Student Writing Intensives teach students directly. Each level (A for grades 3-5, B for grades 6-8, and C for grades 9-12) includes 4 DVDs containing live recordings of a two-day seminar Mr. Pudewa conducts, though the Intensives are intended for one week of study. Students watch the lectures (with or without a parent/teacher) and complete the work; the instructor will need to grade the students' work.
A binder for each level contains instructions and lesson plans for teachers and handouts for students. While students could conceivably do everything on their own it's still a good idea to be involved as they complete the process. Exercises are similar to those encountered in the Structure & Style manual. Each Intensive is a complete course in itself, though it wouldn't be a bad idea to supplement each with other offerings from IEW, particularly any of the Theme-Based Writing Lessons.
The SWI Continuation Courses (following the same level/grade correspondence as the Intensives themselves) contain 32 follow-up lessons elaborating on and adding to the material taught in the Student Writing Intensives. Each level (A-C) is a series of nine lecture DVDs and one CD-Rom containing notes, checklists, etc. to be printed and used. Again, the information is taught directly to the student, though if you want you could watch them yourself and relate the information to your kids. These are strongly recommended for students who have completed the corresponding Intensive, as they present a much more thorough writing education.