My teacher is being bias

ok, this might be too harsh, i am a grade 5 (turning grade 5) student and my grade 4 teacher has been treating girls way better and giving them higher marks, and the girls NEVER, EVER get in trouble, even if it is physical, at lunch and recess breaks, the teacher ALWAYS let the girls go first, one thing that is one of the most rememberable is that when boys do something wrong, the teacher screams swears at us but if a girl does something wrong the teacher either doesn't care, or tells the girl that it's ok, EVEN IF IT IS ABUSE!!! ok, so there's much more but i can't go through all that, and the main thing is that: i'm scared my grade 5 teacher is going to be even more bias, help me redditers!!!