<human>: Give me a shortened version of the text

H I am 17yo, in September to start my third (final) year in Senior Highschool and take final exam in mid 2015 to determine which university I will attend to, if at all.

I finished junior highschool with good grades, with the average of over 5.6 (where 6 is A and 1 is F) and B's only in unimportant subjects. Despite having annoying health problems (suffering to this day) I aced the final exams and scored in top 1% in every subject. I applied to the best class available in my city, choosing other schools rather randomly. The timing of internal tests to this class was rather inconvenient (severe allergies), and I got rejected, losing 1 point from 600 pool to the next person that was accepted. I tried to reapply days after rejection. I was told I was second person to be reconsidered in case of open space. In meantime I got into supposedly second best school available. It turned out the school I now go to is a nightmare. In my class and profile (I am told that other profiles are taken care of much better) there are periods when I won't be taught a subject for months due to school's incapacity to present substitutes or just to manage lessons at all. There are many distractions if we get to learn at all, and we are tremendously behind in our main subject, basically rendering me and everyone else incapable of recalling any material past junior. In-school environment (building, peers and so on) is terrible and definitely not good for anyone, plus there is an enormous religious and school's pride pressure. I've tried to reapply year later to the class, scored in top 15 at internal tests, was rejected again. Now my grades are terrible, I am extremely stressed every day, even during holidays, and there is a huge pression from my family to perform at top level again. I am sure that with my current knowledge I am not to perform well at finals. I think that with my grades low now, I've lost my carte blanche when it comes to picking another school I might want to be in. I am lost and mad at myself for screwing my choices and later not finding enough strength to fix them soon enough, rendering me in this poor spot.
<bot>: finished junior highscool with top scores, got rejected, stuck in school that doesn't prepare me to final exams at all, lost my motivation, have less that 10 months to prepare myself.