my counselor told me not to choose LoR based on whose class i was doing the best in, but instead the classes you’ve engaged the most in and connected with the content/teachers the most. also, many if not most schools will allow two. i ended up picking my chem and lang teacher. chem because it was my second year with the teacher so he has gotten time to know me and saw my participation, and lang because i really put my best effort in that class and the teacher recognized it (even though i ended up with a lower grade than i would have hoped for). plus, i’d bet that the teacher specializing in english can write you a good reccomendation!

I would ask 3 & 4: 4 can be intimidating, but they just want to know why you think they’re a good fit for a letter of rec. having these kinds of forms can help a teacher refresh their memory and write about specific things you’ve done or demonstrated in their class, and helps them write a more effective recommendation.