The One Where I Break Down My School Day

I've been feeling guilty over the fact that we complete our school day in about 3-4 hrs each day. We begin by 8 each morning and are done by noon each day. Rarely have we gone past noon & most day we're done quite a bit before noon. I was trying to figure out if we're skipping something important & I realized we are skipping some things. We don't do breaks or lunches. We work straight through, taking a 5 min break to grab a snack around 10. We don't have to get from one room to another. I don't count P.E. into our school day nor do I count music. We don't do home room or assemblies. So I guess, we probably spend about the same time as the public school does on academics.