My daughter is 13 and up until recently was a straight A honor roll student. She has never brought home anything less than a B her entire academic life. HOWEVER, she is now NOT doing her homework. Her grades are dropping to C's and D's because she is forgetting to turn in assignments and not studying for tests and quiz's. She is also in all advanced honor classes and I my initial thoughts were the classes were too hard for her but now I am finding out that she is just being lazy and not doing the work.
What is it with this age?
Agree with margypops - set up a reward system, and do not let them to get to preffered activities until they finish their homework.
Get the rewarded for succesfull homework, you can then slowly fade it out.
What do they do after school when they should be doing their homework? do they sit and look at each other or are they sat doing nothing in their room? Dont let them do anything else, no TV, no Computer, no games,no firends, till homework is done, make it a priority and enforce it, if they are bored enough they may get their homework so they can get into more enjoyable stuff before dinner and bed.