<p>If the school will accept a third one, the common app form should allow you to invite a third recommender even though only two are required. If it doesn’t allow you to do that, you could always have your third person do a paper rec and mail it in. How schools deal with additional recs varies. Some will look at them and some won’t, so it’s best to contact your schools before going to all this effort. </p>
<p>You are posting in the Stanford forum, but it’s not clear from your post whether your question is particular to Stanford. If it is a Stanford question, look here for more: [Teacher</a> Evaluations : Stanford University](<a href=“http://www.stanford.edu/dept/uga/application/freshman/evals.html]Teacher”>http://www.stanford.edu/dept/uga/application/freshman/evals.html)</p>