well i have a personal experience similiar to this...
i had always been a top student..it was my science exam and the girl at the back of me was apparently(she swears she didnt) looking at my sheet...anyway ..i was doing my paper..suddenly this teacher comes..snatches her paper along with mine...i still remember ..i was so horrified coz i've never cheated in my life,i started crying...i couldnt even say anuything coz of shock...the teacher ultimately returned the paper..but the damage was done..i didnt score well due to lack of time..when my parents complained this to the HOD instead of rectifying their mistake ..they accused me of lying😕 😡and insulted my parents😡..my dad was so angry..he immediately went straight to the principals office😆..thankfully the principal was sane enough to look into this...i still feel really angry when i remember this incident...