Back to School to Visit friends and teacher

On one fine Tuesday afternoon, I asked one of my friedns to accompany me back to my secondary school to visit our friends from Choir to see how they are doing and some of the teachers.
Upon arrival, I couldn't contact the teacher who normally brings me into the school in order to avoid needing to fill up forms and hence I waited in my(father's) car in order to wait for him to return my calls. And it was 1 in the afternoon with the sun way up the sky, heating me and the car up to a temperature I couldn't stand even with the air-cond on (maybe it is because the car was old and it was stationary)
After sometime we went in and the teacher which I was still in contact with brought me out for a drink somewhere nearby.
While we were drinking, I meet my choir master and the teacher in charge and said hello to them. They told me something about not going into the music room until they have reached but I didn't understand them at that time.
After enjoying the refreshing drink with my teacher, we went back to the school and I went to see my friends in the music room.
After going into the room, I realized they were starting to warm up their voices and I found a new and unfamiliar face in the midst of students(she was the new teacher in charge) She came forward and asked me who am I and why was I here. After explaining briefly I walked away when she looked like she had nothing else to say.
Not long after that, while I was resting on the chair and talking to the remaining friends in the choir that I still knew, someone came forward and told me the teacher asked me to kindly leave the room.
I obeyed and went downstairs and looked for the male team who were having their run around the school. Then when the instructor came I went up to the room with her and sat in a corner in order not to disturb them.
Minutes later, one of the vice principal came bursting in madly screaming "Can the person who isn't a school student please come out!!"
Not knowing what was happening I cooly went out only to find myself in the middle of being scolded by the vice principles since the new teacher in charge was so fussy and made a complaint since I stayed in the room despite her asking me to go out at the 2nd time after I went in(which she didn't realise)
During the scold, I ignored them but felt sorry for the friends which I caused trouble, 3 of the highest ranking student in charge of the choir came out to back me up and even the instructor called the ex-teacher in charge to come to see what was happening and she ended up helping me which I also felt so sorry for causing her trouble as well.
Later I found out that this new teacher are finding a lot of trouble with ex-students coming back to school to visit our choir mates which is an old tradition of ours.
Oh well, that's life.