Why are my teachers always picking on me?

i mean like everytime i wear something 2 skewl she always has 2 find sumthin wrong w/ it, 1 time i wore a skort and she told me u cant wear skirts like that i can see yur ..i mean wtf its a skort for goodness sake y is she even looking there nd umm theres wuz like a lot of ppl who even wore shorter crap..and the same w/ when i wore shorts 2day shes like pull down yur shorts they r 2 short i can see yur but..for goodness sake they werent that short and besides there was this girl who evn had shorter shorts and when i wore halters she tells me i cant wear that it needs a strap..wtf look at those ppl wearing tube tops!..The grade 7 teacher is always making fun of me. im just sittin down and tryin not 2 laugh in health cl because its not allowed in my cl, but mrs curtis is doing everything she can 2 make me laugh so i can get sent out of the cl. it also feels like all the teachers are tryin to get me into trouble or just make me feel bad. :( Im only a pre teen gimme a break!