First you will find a list of the staff at Hogwarts, then the subjects they teach and then, short descriptions of them.

1. Minerva McGonagall
2. (Filius) Flitwick
3. Severus Snape
4. Argus Filch
5. Prof. Sinistra
6. Sybil Trelawney
7. Dolores Jane Umbridge
8. Mrs. Norris
9. Prof. Sprout
10. Gilderoy Lockhart
11. Prof. Quirrell
12. Remus Lupin
13. Alastor Moody
14. Albus (middle name coming soon) Dumbledore
15. Madam Hooch
16. Prof. Binns
17. Rubeus Hagrid
18. Madam Pince

(sorry if I have forgotten someone)

1. Transfiguration/ Deputy Headmistress
2. Charms
3. Potions
4. Caretaker
5. Astronomy
6. Divination
7. Defence Against the Dark Arts/ Headmistress/ Hogwarts's High Inquisitor
8. Prowler
9. Herbology
10. Defence Against the Dark Arts
11. Defence Against the Dark Arts
12. Defence Against the Dark Arts
13. Defence Against the Dark Arts
14. Headmaster/ formerly Transfiguration
15. Flying teacher
16. History of Magic
17. Care of Magical Creatures
18. Librarian

1. A strict-looking bespectacled woman who wears her hair in a tight bun.
2. A tiny old man who squeks when speaking.
3. A sallow-skinned, greasy-haired, hook-nosed teacher with shoulder-length black hair.
4. An old evil man with greasy hair who would like corporal punishment legalised.
5. unknown
6. A middle-aged bespectacled, heavily-jewellered beetle-looking woman.
7. A fat woman with a girly high voice and looks like a toad.
8. An ugly cat with lamp-like eyes.
9. A cheerful woman with dirty nails and flyaway grey hair.
10. A handsome man with wavey blond hair.
11. A pale young man with a strong stammer.
12. A kind middle-aged man with hair flecked with grey.
13. An old man with oily hair, wooden leg, heavily scarred face and a magical eye.
14. A tall old man with brilliantly white, waist-length beard.
15. A woman with short grey hair, yellow eyes and looks like a hawk.
16. A ghost teacher that has a very boring voice.
17. A giant man with a huge tangly beard and beetle-black eyes.
18. A strict and perceptive woman who resembles an underfed Vulture.