then he quit from school, his mom cant stand of every report the teacher sent, and she insisted that he had to attend the same school again next year, so he just study at home, using the same books, then i talked to her mom one day, he had no difficulties when i taught him in mandarin, what make him fail was he hard to interpret what has been taught to his language. he even can learn fast on the subject higher than before, his mom surprised that he really can do all the homework, then i told his mom to send him to mandarin school. after long discussion, his mom agree.