WI it sounds like you are on the right track with this. Please realize that you are an AWESOME parent to look into this and to try to find out what is going on and find ways to improve it.

It really angers me that your husband not only wants to blame you for falling grades, but now we find out that there is a potential solution (with regard to ADD) and he wants to DISMISS that solution but STILL wants to blame YOU for the grades.

It sounds to me like the ADD thing is what you need to look into. If it will help your daughter, and also if you suspect she is beginning to suffer from depression, you need to make sure that not only the decisions regarding treatment stay with you and your daughter--and get as many others on your side to help, so that your husband won't be able to just poo-poo the idea and keep it from happening.

The other thing is that you may be in a great position to teach your daughter that there are always going to be people like her father that don't "believe" in these illnesses but that she should be strong of her own will and make her own decisions as to what she needs, and not to be embarrassed if people like her dad say they "should be able to just get better on their own." Give her that strong sense that people like that are simply wrong about depression, ADD, etc. Maybe this will give her the hope to try treatment and the belief that she can do better in school.

You may not be able to teach her math directly, but there are clearly a lot of areas where you will be able to teach her and give her skills that will carry her through life, even if she doesn't pursue a career that requires algebra (and even if she does!)