Why is everything in my life going wrong?

i am a high school student in houston i am senior in school i was suppose to be in 11 grade now .. but i jumped two years of my high school ... i did extra work i use to go to school at 6 in the morning and i use to get home at 6:30 in evening .. i took summer school twice 3 cles .. and i use to get home at 7 in evening in summer ...just so i can finish high school early .... it took me 2 years to finish my high school ... but in my senior year i was happy to graduate since 1st semester ..but after that things started changing .... my grades dropped .. i would work hard but no progress ....i took TAKS and ped everything except maths ... i failed it with one question ..which put me in alot of depression .. i took it again .. it was my last time .. ihad to p it .. but i failed it with one question again ..... A guy who can finish high school in two years FAILED a small test .. it kills me from inside...because now i cant graduate i cant walk with my friends .my economics teacher told me that my grade was too low to p his cl so i cant p it no matter what i do ... i did so much work for for his class ,,,,and he still had zeroes on computer for me .today i got a call from my teacher he said that i didnt take his final ...and i actually did in 200 students only my paper was gone . where did everything go no body knows . i am hating my life right now ... all the work i did ... ruined my sleep.. my weekends .. my fun time ...for this ? for nothing ? today is my school graduation cermony i am sitting here writing this ...i feel like getting up and killing my self .. my school school played me wrong no one helped me .. i got so depressed about it that i was in coma for 3 hours .. few days ago .. i just cant think of anything now ..i dont know what i will end up doing ..