<p>No matter how you mention your OCD and how it effected your grades, it might be seen as a plea for sympathy or an excuse – which is why you need your guidance counselor to document the issue and to be your advocate. Although the situation is dissimilar to yours, see what a good GC letter can do: [Writing</a> Recommendations | MIT Admissions](<a href=“http://mitadmissions.org/apply/prepare/writingrecs]Writing”>How to write good letters of recommendation | MIT Admissions)</p>
<p>You might want to take this question to the Learning Differences and Challenges - LD, ADHD forum–there are also several threads on there discussing the pros and cons of disclosing a disabilty.</p>