This girl said hi and I don't know if she's trying to be freindy or what?

At summer school there's this girl in my class and she cute. So today waz like the introduction class and so no one knew anybody soo yeah I guess me and my freind chase started playing the class clown act so we could get out da quiet boring class so I sat next to her on the first day I couldve sat with my freind chase but something in my mind mad me sit next to that girl so yeahhh she was always focusing on what I was doing and stuff and she just kinda just repeatedly glared at what I was doing saw in da corner of my eye then so yeah the next day I sat down I was real sleepy so I was quiet and she said Hi Matt ifirst thing dat came to my mind is how da hell does she know my name so I was kinda of speechless cause she was a cute girl and so I said hey in a low voice and so yeah dat was bout it then a the day passerd on I was just like asking da teachet questions and she was laughing when it wasn't funny haha and when I tap my pencil she began tapping during that class like I don't know if this girl is just trying to be freindly or she likes me.