A/N I have redone these chapters for my new plot as the other one totally wasn't working so here we are the new chapter three

Chapter 3: Potions Class

Marissa was thinking about what part of the plan to do first. She decided not to tell her dad about her attending Hogwarts until she arrived in his class on Monday. It was sure to be a surprise for him. The part about her coming back for extra credit will be a little startling since Marissa was upped a year at Durmstrang but the part about her being in Gryffindor! He's sure to flip.

Monday:

Marissa' POV

As Harry, Hermione, Ron and I made our way to first period (potions class) I was as jumpy as ever. I had never been so excited in my life. It was a weird feeling though. I mean it was my dad I was going after. But from all the things I heard in the past about him I knew he deserved it.
As we walked into the classroom he didn't look up. I sat down next to Hermione and we got out or potions books. As he looked up he noticed me. He gave a weird look but didn't say anything. As the class went on every time he asked a question I had my hand up. But did he call on me? No! it was now time to put this thing in action!

Harry's POV

As I looked behind me to see if Marissa was going to start she had the most evilest look I had ever seen. It was going to happen! Snape then started to ask another question and the plan was in action.

"Would somebody please tell me why we don't put gilly weed in a polyjuice potion? Neville!" Snape called out. Neville was about to answer but Marissa jumped in.

"Because you just don't!" She said.

"Is your name Neville?" Snape said as he gave her a hard cold glare.

"It could be!"
Snape was getting red in the face. Nobody talks back to Snape while he's teaching not even Marissa!

"Go home!" He said practically yelling. "But I go to school here now!"

"Why?"

"Extra credit!"
Well then go back to Slytheryn common room! You are not to be in my class."

"But I'm not in Slytheryn! I'm in Gryffindor!" She yelled out !
"Fine go to the head master!"

"Let me ask you something then." She started "Why are you such a hard ass and ask everybody who doesn't know the answer instead of the people who do?"

"Because they don't learn if you don't test them. Now go!"

"NO!"

"Pardon me?" He was so red in the face I swear he looked almost as mad as my uncle Vernon!

"They aren't learning anything if you scare then have to death either! I just don't get you! Your nice but when you get to this school you're a total jack ass! Now if your gonna be a good teacher than teach and stop being and itch with a b in front!"
I swear if Snape would have gotten any redder he would have exploded! But what happened next was totally unexpected. He left the room and for a minute we thought he'd never some back. Then professor Dumbledore came in and Snape grabbed Marissa by the arm and pulled her outside.

You could hear a lot of yelling and Marissa was surly winning. If only we could hear what they were talking about.

A/N Okay there chapter 3, I know my chapter's are short but Im kind of busy so I don't have a lot of time to write ! But at least I get some time to write it right? Well thanks to my reviewers!