Glisseo, Impedimenta, Stupefy, Expelliarmus, Repello Muggletum, Reducto, Reparo, Levicorpus, Sectumsempra, Imperio, Crucio. Protego, Petrificus Totalus, Waddiwasi, Alohomora, Priori Incantatem.
Professor Gilderoy Lockhart, author of Magical Me, Travels with Trolls, Break With a Banshee, Year with the Yeti, and Voyages with Vampires. Also five-time winner of the Most Charming Smile Award and Order of Merlin, Third Class.
Professor Remus Lupin, also known as Moony, member of the Order of the Phoenix and a Marauder.
Bartemius Crouch Jr. impersonating Professor Alastor (Mad-Eye) Moody, a Death Eater (Crouch, not Moody.) Moody is an Auror and Member of the Order of the Phoenix.
Professor Dolores Jane Umbridge, Senior Undersecretary to the Minister, Hogwarts High Inquisitor, and briefly Headmistress of Hogwarts School of Witchcraft and Wizardry.
Professor Severus Snape, also known as Snivellus, fake Death Eater and spy for Lord Voldemort. Formerly Potions master, also at Hogwarts School.
In Harry's seventh year, he did not go to school.
Professor Lupin, as previously mentioned, teaches Harry the Patronus Charm in his office with a boggart in order to repel dementors. He is successful, and Harry can save his godfather when they are attacked by the monsters.
For the first three years, Oliver Wood is captain of the Griffindor Quidditch team, leading them to victory in Harry's third year. There was no Quidditch in the fourth year, and in his fifth the captain was Angelina Johnson for the time Harry played before he was banned. In sixth year he was awarded the honor himself, and in seventh he did not attend school.
Ron Weasley went to the Yule Ball with Padma Patil, Ravenclaw, twin sister of Parvati Patil, Griffindor. It did not end well.
No, I did not cheat on this. Promise.