Oh ... well, colleges normally use a MWF and TTh schedule. High Schools are a M-F schedule. I decided to be a little different and use part of both concepts. Privately funded schools like Albuquerque Academy have some summer reading to do to get ready for English classes. And you have to register a year in advance. (I am assuming Witness Protection got some leeway here.) Oh one class I added was Equestrian. (No stallions allowed.) But it is second semester course for weather reasons.