<p>Having worked in an admissions office, I can tell you that we don’t read these letters in order to see which teacher writes the most glowing letter. Rather, what you’re looking for is someone who can give insightful observations of the applicant. A teacher knowing you, who takes time to write something personal and unique and who gives an honest assessment is much better than a writer who just piles up positive adjectives.</p>
<p>Also, many writers damn with faint praise or otherwise make it plain that they do not really know the applicant.</p>