For a post-DH story following a first year student, I cane up with a complete class schedule. It's a bit simplified - to make it easier on myself, I limited it to four class slots per day, and I made the following assumptions:

For the first years, every class would be taught to two houses together.

The major classes (Charms, DADA, Transfiguration, Herbology, Potions) would meet twice a week, with one double session and one single session.

The minor classes (Flying, Astronomy, History of Magic and Muggle Studies - in my post-DH world, the new Ministry leadership decided that Muggle Studies would be a requirement for all students) would meet once a week for a single session.

Here it is, by house:

Code:
	Gryffindor
	Monday
AM	Transfiguration
AM	Transfiguration
PM	DADA
PM	Charms
Night	Free
	
	Tuesday
AM	Herbology
AM	History of Magic
PM	Potions
PM	Potions
Night	Free
	
	Wednesday
AM	DADA
AM	DADA
PM	Muggle Studies
PM	Flying
Night	Astronomy
	
	Thursday
AM	Herbology
AM	Herbology
PM	Potions
PM	Transfiguration
Night	Free
	
	Friday
AM	Charms
AM	Charms
PM	Free
PM	Free
Night	Free


	Ravenclaw
	Monday
AM	Transfiguration
AM	Transfiguration
PM	DADA
PM	Herbology
Night	Free
	
	Tuesday
AM	Charms
AM	Potions
PM	Muggle Studies
PM	Flying
Night	Free
	
	Wednesday
AM	DADA
AM	DADA
PM	Potions
PM	Potions
Night	Astronomy
	
	Thursday
AM	Charms
AM	Charms
PM	History of Magic
PM	Transfiguration
Night	Free
	
	Friday
AM	Herbology
AM	Herbology
PM	Free
PM	Free
Night	Free

	Hufflepuff
	Monday
AM	DADA
AM	DADA
PM	Transfiguration
PM	Charms
Night	Free
	
	Tuesday
AM	Herbology
AM	Potions
PM	Muggle Studies
PM	Flying
Night	Free
	
	Wednesday
AM	Transfiguration
AM	Transfiguration
PM	Potions
PM	Potions
Night	Free
	
	Thursday
AM	Herbology
AM	Herbology
PM	History of Magic
PM	DADA
Night	Astronomy
	
	Friday
AM	Charms
AM	Charms
PM	Free
PM	Free
Night	Free

	Slytherin
	Monday
AM	DADA
AM	DADA
PM	Transfiguration
PM	Herbology
Night	Free
	
	Tuesday
AM	Charms
AM	History of Magic
PM	Potions
PM	Potions
Night	Free
	
	Wednesday
AM	Transfiguration
AM	Transfiguration
PM	Muggle Studies
PM	Flying
Night	Free
	
	Thursday
AM	Charms
AM	Charms
PM	Potions
PM	DADA
Night	Astronomy
	
	Friday
AM	Herbology
AM	Herbology
PM	Free
PM	Free
Night	Free