I teach music in the parish school where I work as organist/choir director. I have been using the Ward method in the school for the past three or four years. Some classes (K-2) meet twice a week, others once. I never took a Ward class, just bought the textbooks and began using them. I only spend 10 minutes or so on the method in any given class. I'm hoping it will help my children's choir learn music faster. To answer your question, the Method is designed to be used five days a week for about 20 minutes per day, but I feel that children are benefitting from it even if it's only once a week. It just takes longer to cover the book.