<p>IMO, it’s got to be a very well-considered decision for a STEM kid to apply without at least one math or sci LoR. At more competitive colleges, so many highly qualified kids will have at least one. These teachers can offer a vital (and relevant) first-hand view in that arena. After that, sure, go for an off-subject core teacher.</p>
<p>You’ve done so much research- I’m sure you know more about the schools your kids will apply to than I possibly could.</p>