His teacher calls everyday and with his step father he feels he can rule and majority of the time he is sucessfull.
what does this mean? The child successfully manipulates the stepfather? or the stepfather can make the child obey?
This sounds like ordinary behavior for his age ,except for the Bullying and you could address that seriously with him.he does need some restrictions and help regarding doing that to other children. The putting stuff under his bed seems harmless its his room so relax the regulations on that ,and same with straightening his room unless it is really messy and dirty ,does it matter, ?If he is hungry let him have a healthy snack ie Fruit and cheese,before dinner , then he wont ask over and over. perhaps you are over reacting to a lot of these things , but do sort out the bullying .that hurts the other children and you need to stop it.