<p>I'm going to apply to MIT and Caltech and I was wondering if it's ok to get a recommendation from a retired teacher (an old AP Bio teacher).</p>
<p>When did you have the teacher? Junior year teachers are best...</p>
<p>If you had this teacher recently, and they just retired, go ahead. My English teacher that I'd known forever retired the spring of my junior year, but had the time to write me an amazing letter!</p>
<p>I agree, as long as you had the teacher recently so he or she can write to your strenghts.</p>