low score

I got low score in this exam ,i do not konw why ,Maybe i really need get more prictise ,Before i was in us.i did not feel get high score is as hard as study it in here,i alreay got high score in my class.But in here ,i feel everything is different between the uk and the us.i need to adapt mine thinking to the new conditions.it is has a little bit hard .different countrise has different education and the way to teach student,i have to face the truth.and work hard.