Grades

Hi,

I am new to the boards and I need help with dealing with my daughters grades. 

She is a 12 year old with ADHD, OCD and Anxiety disorders.

DD has been lying to us about homework, how much and when it is due.  Now she is almost failing her classes.

1st question I have is lying a normal part of a child with these disorders?

2nd I don't know if I should dicipline (sp) her or ask her teachers for more help. 

DH just wants to yell and punish, I am not so sure this is the best way to go about it.

Has anyone else had these kinds of problems?  If so what worked for you?

Thanks