Karen, As you know I teach children with learning disabilities. I wish I could say that these students make a lot of progress during the school year, sometimes they do and sometimes they don't.
I also believe that once kids reach the high school years they start to plateau. Keep in mind that typically these students receive 5 out of 7 classes in the regular education classes depending on the severity of their disability. Usually they receive their English and math in the special education classes with them being mainstreamed for everything else. Some are self-contained in the special classes depending on the severity of their disability. Sometimes you see more progress in the younger students than you do the older ones.
I honestly believe with your background of teaching they are getting much more individualized instruction with you. We all know that teachers are spread very thinly even in special education classes.
Be sure to compare their new scores with their previous pshychological exams to check for gains. How many years has it been since their last exam?
Life's challenges are not supposed to paralyze you, they're supposed to help you discover who you are. -- Bernice Johnson Reagon