Buffy sat in a seat next Giles examining her nails before looking up at him and saying quietly "Do I really have to teach this class?" Giles just smiled at her in that way parents with children do and said "You agreed to the alternating teaching, so yes you do!" Buffy sighed and watched as the clock showed it was time for the new class to come and she nearly let out a scream of frustration when Umbridge walked in and took a seat at the back.

She instead bit her lip and stood up and leant against the desk as the fifth years came in. Buffy watched as Harry's friends and Harry shot her a look before taking a seat. She merely raised an eyebrow before picking up a book and flipping through looking for the entire world like she didn't care about the students entering the room.

She nearly snickered when she noticed out of the corner of her eyes Harry whispering to his friends. She of course heard him whisper "How is she going to teach us?" She heard the bushy haired teen whisper back "Harry, She's a professor." She would have liked to let them continue but upon seeing the entire class had entered she cleared her throat and had everyone's attention.

She smiled brightly at them and said "Ok well Professor Giles informed me you have had a quick intro about Vampires yesterday, although you had a little interruption." She pointingly stared at Umbridge before turning back to the students and said "Right well as you may have heard, the entire school is learning around the same thing, with only a little changing depending on the level, the reason for this is because recently the forbidden forest has taken up residents of the vampire variety ("hem, hem") (Buffy turned to Umbridge) We had this conversation this morning. (Back to the students) So I'm Professor Summers, but call me Buffy, (turns to Umbridge again) don't think about it! (Back to class) Professor Giles has probably already told you that I am going to be teaching you every second class but mostly I will be assisting him. As for today as I am the resident expert on vampires so you guys are learning from me."

Buffy noticed the bushy haired teen next to Harry put her hand up and Buffy lazily waved her hand at her. The girl spoke in a forceful voice "I was wondering how exactly you are an expert at vampires?" Buffy eyebrow shot up again clearly impressed, no one had asked in the last class, she cast a look back at Giles who was looking at her wondering what she would say. She sighed and said "Well how is anybody an expert in anything Miss …" The girl blushed and said "Granger, Hermione Granger." Buffy said "Right Miss Granger, one becomes a expert with practice so I have known about vampire for years now."

Harry suddenly spoke up "But you're only 18!" Buffy shot him a look and said "So you are saying Mr Potter that the more you age the more you know…. that someone my age doesn't know enough to teach?" Harry shook his head in the affirmative and said "How are we supposed to learn from someone 3 years older than us!" Buffy looked down for a second and said "I suppose you are going to tell me that you know enough to take on a vampire by yourself? That you could defend yourself if I thrust you in the situation?" She thought she was doing fairly well at remaining calm whereas he not so much.

Harry gapped at her for a second before saying "What is the likely hood I would even meet a vampire in the real world?" Buffy stifled a smirk and said "Quite high actually, how else would I have become an expert?" The red headed boy next to her muttered to his friend "Probably by hanging around Snape!"

Buffy couldn't help what happened next. "Excuse me, what is your name?" The red headed boy stammered "R Ron" Buffy frowned and said "Do you want to repeat what you said a minute ago?" He shook his head vehemently but at her look he said a little louder "I just mean that you seem to be chummy around Professor Snape and seeing as how he wants to teach Dark arts you could have been taught by him." At the end of this sentence he seemed quite proud at being able to come up with a different reason but Buffy said "Right Chummy? So does that mean since he teaches you, you're an expert on potions?"

Ron blushed again and Buffy shook her head and said "Right well so if no one else has anything else to say about my teaching can I continue with the lesson?"

Harry however had other ideas and said "What else other than about Vampires can you teach us?"

Buffy sighed and said "I can teach about various demons, ascensions, spells to stop various demons and combat training everything else is Giles, Professor Giles' department."

Harry however looked annoyed and said "And how exactly is all that supposed to help us protect ourselves from Voldermort?"

The entire class seemed to flinch but Buffy however having never heard of this name said "Who?"

Now the entire class was gapping at her and Umbridge said "Mr Potter there is no need to protect yourselves from You Know Who!" Harry started arguing with Umbridge whereas Buffy quickly turned to Giles and said "Splainy!"

Giles looked down before saying "Honestly how did you live here for five months and not be told this?" Buffy shrugged and said "I was too busy learning how to teach!" Giles quickly explained about the evil wizard hell bent on killing off all the muggle born and mud bloods and of course Harry's involvement but he told her he would go into more detail after class.

Buffy spun around at hearing the voice getting to the yelling point before she herself blew her fingers in that whistling sound and said "Ok you shush and you sit down and calm down!" Umbridge at being told to shush turned to the young professor and said "Excuse me but ..." Buffy waved her hand and said "You're excused, now Harry, tell me why combat training won't…" Umbridge butted in again with "Professor Summers, I do believe that Mr Potter needs to be punished for interrupting the class."

Buffy turned to her and said "He didn't interrupt you did, he was merely asking a question before you interrupted."

Umbridge replied very vehemently "He did not state his opinion; he stated the need to protect himself from the dark lord when we all know there is no need."

Harry stood up again and said "There is a need, he killed Cedric!"

Umbridge replied with " 20 points from Gryffindor for lying."

Harry was on the verge of yelling when Buffy cut him off talking softly but loud enough to get the attention of both people.

"You need to calm yourself Harry, before you lose more than just points!" Harry turned on her now and said "What would you know?" I'm telling the truth! You weren't there, none of you were!"

Buffy tried to smile at him and said "It doesn't matter what is true or not, you need to calm down."

He shook his head and said "You're with Snape why the hell should I listen to you?" Buffy frowned once again and said "Because I am your Professor like it or not! You will serve detention tonight with me. Now everyone sit down. Ms Umbridge, I would appreciate it if you would stop interrupting my class, or I will be forced to follow through with my threat!"

Umbridge looked down at her and said "Potter deserves to have more than just a detention for the behaviour shown."

Buffy sighed and said "This is my classroom, my rules, remember!"

Umbridge shook her head and said "He needs to be disciplined!"

Buffy took a deep breath and said "That's it, I have half an hour left of this class and I intent to use it so get out before I make you get out!"

Umbridge looked at her shocked and Buffy upon seeing her not moving grabbed her wand, opened the door and said the spell Snape had taught her and Umbridge flew out of the room.

She then turned to the classroom and said "Right now who wants to tell me how to kill a vampire?"

Author note: Yeah so next chapter will be Giles informing Buffy more about the whole Voldermort thing and her being a little pissed off about not being told and of course then there is the detention with Harry which should prove interesting. I hope you guys like this chapter and I will try to update again soon. The daily updates aren't being promised anymore but it doesn't seem to take my long to update, so enjoy. And thanks for the reviews, over 100, totally rocks.