<p>See title above</p>
<p>No, there’s no restriction against it. I think they prefer upper-level teachers simply because they’ve taught you more recently - but if you have a sophomore teacher who could give you an awesome recommendation, that’s well worth it ^_^</p>
<p>Nope! The two most important criteria for recs are “specific and storied.” A sophomore year teacher who can elaborate on your merits and character with supporting detail and specific stories is much better than a junior/senior year teacher who can’t say much about you beyond your academic performance (which is already available to Admissions on transcript anyway).</p>
<p>I actually used a sophomore teacher’s evaluation in my application.</p>
<p>He did, however, teach my physics class in my senior year also, but the recommendation was based on the other classes as it was the “humanities” recommendation. </p>
<p>What I’m trying to say - as Jeff said - is that it should be fine! =)</p>
<p>no; pick whoever will write most compellingly on your behalf</p>