1, the child is indeed more rebellious or mischievous, maybe it is the previous. This will need to be in the children's performance to education, so that children become more "good", even if it is pretending
2, ask the principal or the education system department to say hello, but this you do not necessarily have a relationship, it is only every once in a while and the teacher to call the phone, ah, invited the teacher to dinner, gifts, and so on.
3, they spend more energy to educate
4, change class is also a way, but easily do not try, because in the eyes of everyone only "difficult to teach" students will change class.
Of course, some people will say that gifts bring down teachers and so on, but when a teacher gives up on a student, it's very scary.
Raising children do not expect children to become a dragon and phoenix, can grow up in good health, peace and quiet on the line, as long as the character of the good on the line.