Not every school designates a class period for lunch. Our school is on a block schedule - 4 classes per day - plus lunch. There is also an optional “zero hour” period that is usually for the marching band, orchestra, athletics, newspaper, yearbook, and higher-level technology classes that either practice during that time or update the website with daily news. There may be other classes as well. So, yes, it is possible to take what you consider 9 academic classes periods plus lunch.