My spanish teacher is going to become an assistant principal next year. She won’t teach spanish anymore. She’s the only teacher who I actually like and can say all the good things about me. Would it be fine to get it from her or not?
That should not be an issue if she is currently your teacher.
Not a problem whatsoever.
Absolutely not a problem. In fact, her promotion speaks to her good judgement-- a letter from her could even have more weight than would that from another teacher.
But you’ll probably need a second letter as well. Think back who that second teacher will be.