MY FORM 4 IS RUIN MY FROM 3

I dont know why..my is so perfect with my friends,familyplus all my cousin.just my PMR result je yg x perfect.then started my from 4 everything goes wierd just because we all have a kelas yg berasingan.All the science cemerlang with class account and class science bestari.just because the UNTUNG thing..then suddenly 2 of my drop science bestari to go to acc class.account is my class.They  making me tesion lah.i cannot tahan lah..i dont know they change so much..BUAT SIKIT-SIKIT SUDAH!..they are over!..:)).what can i do.i just can do site back and trry to reliks!..:))