carol,
The rubrics for special education students would most likely need to have fewer criteria and not too complicated of criteria. Also, you may take an assignment and grade the different parts with different rubrics. For example, if they do a PowerPoint presentation, have one rubric for "look and feel," one rubric for "spelling and grammar," etc. That way they will not be overwhelmed with one big rubric and feel they can't accomplish everything. Hope this is helpful.