I was teaching middle school Spanish when I wrote these books in 2005, but I had previous high school Spanish experience and had used most of these stories with high school students as well. The lessons will work with any schedule…just turn the page when you finish a lesson and go on to the next. You may find that you finish A faster than one semester, or that it takes longer than a semester to finish. It doesn’t really matter. The lessons are sequential, building on each other. You just start with A and if you need more lesson plans, go on to B. You may, of course, modify the timing of tests, quizzes, warm-ups, etc. to fit your needs. These lessons plans are complete in and of themselves, but I don’t know of any reason you couldn’t blend them with any and all things you already do, to your heart’s content, including textbook lessons and exercises.
Note: I never wrote any level 2 Spanish Lesson plan books to follow these lesson plans, but my new 2009 Lesson Plan books for high school Spanish will have levels 1, 2, and 3, each level designed to follow up/build on the other levels.
See Target Vocab Lists for each book, by lesson

Jalen’s Original Complete TPRS Lesson Plan Books
Spanish 1a and 1b and English Version 1a and 1b - Each book is spiral-bound, complete with standards-based objectives, step-by-step lesson plans, stories for telling as well as readings, graphic organizers, tests, and quiz masters; 1a is 142 pages and 1b is 133 pages.
Spanish A and B cover the 1st and 2nd semester of level 1 Spanish at the middle or high school level, and the English Version of A and B is a direct English translation of my Spanish lessons (for ESL or other languages.)
Read my original “blurb” about the features of the 2005 Lesson Plans...