Required books for each year - some of these books make up what might be considered to be a standard library for any witch or wizard.

YEAR 1
The Standard Book of Spells Grade 1 by Miranda Goshawk
A Beginner's Guide to Transfiguration by Emeric Switch
A History of Magic  by Bathilda Bagshott
Magical Theory by Adalbert Waffling
One Thousand Magical Herbs and Fungi by Phyllida Spore
Magical Drafts and Potions by Arsenius Jigger 
Fantastic Beasts and Where toFind Them  by Newt Scamander 
The Dark Forces: A Guide to Self-Protection by Quentin Trimble

YEAR 2
The Standard Book of Spells Grade 2 by Miranda Goshawk
Break With A Banshee by Gilderoy Lockhart
Gadding With Ghouls by Gilderoy Lockhart
Holidays With Hags by Gilderoy Lockhart
Travel With Trolls by Gilderoy Lockhart
Voyages With Vampires by Gilderoy Lockhart
Wandering With Werewolves by Gilderoy Lockhart
Year With The Yeti by Gilderoy Lockhart

YEAR 3
Intermediate Transfiguration
The Standard Book of Spells Grade 3 by Miranda Goshawk
The Monster Book Of Monsters
Unfogging the Future by Cassandra Vblatsky
Numerology and Gramatica
various Rune Dictionaries
Ancient Runes Made Easy and
Home Life and Social Habits of British Muggles

YEAR 4
The Standard Book of Spells Grade 4 by Miranda Goshawk
Numerology and Gramatica