Is NOBODY wrong in the post ? POST : 14M (about to be 15)
To get it i will tell you something about my school
On my school if you don’t do a homework you get an extra opportunity to do it (note that the homework would have a value less than 60) if you don’t do it either you get on detention until you do it correctly, this all happens on weekends

The teacher cancelled one of my homework it was fine, i got a paper which tells me that i need to do it ( on paper says which homework i needed to do)i left it on the desktop that i always work (it’s family’s desktop but i use it more) on a specific place. Then when i finally got time to do the homework by sister decided to move it to other place. I always get mad at my sister (22yo) for moving my stuff then end up losing it or even bothered to help me.
(As usual) i say her questions like “hey have you seen this paper?” “No” she says and asked again if she could help me, she replied with the same answer ; i got mad and make a deal about it (not that much but i still made it) , i wouldn’t make this much deal if my parents didn’t punish/make a deal about getting detention

Ending up telling my mother which turning to being calm with it (since it wasn’t my
Fault?) and could do the homework saving me from detention (this was after the deal i made , i was able to do it because a guy send it to a group chat)but i felt bad for being mad at my sister for that and making a deal about it.

Detention: since i live on Mexico i explain what my school detention is.     Normally school is about 7:00am to 2:30 pm but with detention you left until 4:00 pm and what do you do?
You make a long paper work which exhaust your hand

Tl;dr= made a deal to my sister for a school paper which needed for a homework otherwise i would get detention 

Sorry about my bad grammar or exclamations my english is not my native language so if anything wrong tell me so i can fix it