Why do they treat him so much better?

Ok so I have little bro he is 10 and a fith grader I'm a boy and a 6th grader I'm a few years older then him but he always gets bad grades and gets literally anything he wants and he has skipped school like 4 or 6 times and has been expelled 2 times and almost suspended once and even his teacher doesn't like him I can tell but seriously his room is jammed packed with stuff mine… No I get straight A, s and he gets D and F like one time he was begging for a trampoline and 2 mins later they bought it for him when he was in second and I was in third he got an iPhone for NO REASON I ask my parents for things and NO I mean one time they also took him to see a movie ON MY B-DAY without me and last week I asked for a new tv and my dad said yes if I make the honer roll and I did but I didn't get a new tv cuz my stupid brother wanted a tent and my dad blew all his money on that and my brother all he did was lose it after 2 hours i mEAN THey seriously treat him Way better than me

Keep on working hard. I know it doesn't seem like it now, but your parents are actually helping you out a bunch by not spoiling you with things. In essence, they are teaching you how to work for things yourself. This is good, because when its time to be a grownup, you will excell in college, excell in the working world, and excell in relationships.

You will know how to get the things you want out of life without having them handed to you. You will in a sense outperform your brother in everything. You may also be the one he has to depend on to get him out of jams.

So, while you are still young, you might want to make it clear to your parents that it is not okay for them to use you to bail out your brother when he gets in trouble. And that they need to do that themselves (as they are the ones who spoiled him in the first place).