School & Trying to be Cool

The dream I had last night seemed so real I actually believed it was real life when I had it; it was so detailed and life-like. It was the first day of some grade and it was also the last class of the day. I think I looked like I did the first day of seventh grade, when I moved to Mahtomedi (pretty nerdy-looking). The class may have been science, or social studies, or something. The room had tables rather than desks, and at the table where I had to sit there was already someone there, who looked like my cousin Caleb (he wasn't). The room was very quiet as I sat down at my table (if you didn't know already I'm kinda an outcast) then there was chatter again. Eventually we got into the groups at our tables and did stuff, I think we talked about something going on.
Then lots of time passed and it was the middle of the school year (like it is now) and I looked different and also had blue hair (I dyed my hair blue on New Years' last year when I was in 9th, but this was different). We still had the same groups and were playing basketball for some reason and there was a rumor that someone had sneezed on our ball, but only I knew about this rumor. The rest of my group was busy playing, and then they passed it to me, and with all the rumor about the sneeze ball I felt light-headed, which I said. But I tried playing and passing but one guy blocked me so I said "Dammit!" (excuse my French) and then successfully passed it to one guy on my team; he scored!
We went back into the room (where we had different tables) and did this one group activity. My group was near this window looking out into the school's lobby, which was kind of dark. Like a normal window it had a sill, with a cat or dog bed on it (odd). The rest of the group was doing absolutely no work whatsoever, and talking about sports or friends or whatever jock-y guys talk about. I was day-dreaming about hot guys and spelling 'Love' on the window sill with this random tube of shaving cream (yes, a TUBE; gross) but the teacher was behind our group's table talking to a student and I was worried that he'd see me so I wiped it off with the cat/dog bed. Then we were getting up to do a lab or something and I noticed this guy smiling in my direction (this guy my ex-best friend used to date) and I was kinda annoyed.
I think this was when I had a 'flashback' of that first day but something was different: as I was walking to my table I almost ran into another table, that had cards on it. Back into the present of my dream I was walking to my table again and my friend Grace was trying to get a chair to use, but they were somehow all connected to each other (someone had played a prank) and if you tried to get a chair it would fall on your head. It was like this on every single table of the room. Grace was like "Am I ever going to get a chair??" and I noticed there was one not in the chain, just on the floor. So I pointed it out and she said "Oh, thanks!"
Then I was outside with a few classmates (not my original group) and we were trying to paint a picture of this one photograph of me and this popular girl hugging each other in front of a building (very odd). She said (referring to the photograph), "Y'know, I really like this picture." I looked at her kind of strangely and asked her why. She said, "I dunno, I just really like it." I said, "I don't even know where we are in that picture." And the other girl in the group said some town or city which I can't remember. Then I asked what the building was and she said "A hospital" or something.
A few other things happened, but the end of the dream is the clearest to me. Me and a few other classmates were demonstrating to the class how to climb up a bulletin board. But I couldn't get up on it because I'm short. So it was kinda embarrassing but I was laughing the whole time. I said, "Must be that my feet stink!" which the class laughed at, even though it wasn't all that funny. Then I realized I itched, and I can't exactly solve that problem in front of the class. Then the dream ended and this weird collection of clips I've seen from Disney Channel shows I've only seen small parts of flashed in this small window. Then I woke up and solved my itching problem.

Meaning- Again, schools in dreams encourage you to seek info about a certain matter. Cards on a table could suggest it's time I spoke up ('put my cards on the table'), which is true. The hard chairs that we sat in, and that Grace was trying to get may be warning of a difficult or uncomfortable situation ahead. The window could be a 'window of opportunity.'