STRESS !!!!!! :'(

one who understands my situation? no one who understands my situation .. I stress .. I can not learn in my new school .. I want my old school .. only the old school, I can understand what teachers teach .. here I do not understand at all what my teacher taught .. This year already is I want to take a test PMR .. I pray that God opened up my heart my parents and my sister .. I can not learn in my new school .. I can not .. ! Who can help me? no one who understands my situation .. help me!! anyone!