How much weight do recommendation letters have in the admissions process?

I completed my entire high school career in dual-enrollment. Because of this, I usually knew professors for only a semester instead of a full year like regular high school students. The usual requirement for undergraduate admissions for more selective universities is a letter from a math/science teacher and a letter from an English/humanities teacher.

I asked a Calculus I professor which I took for one semester for a recommendation letter, and he was very excited to write the letter. On the other hand, I asked a literature teacher who agreed to write the letter, but suggested he would only be writing a paragraph. Now, the calculus professor has submitted the letter to the Common App, but I’m afraid I could’ve asked other professors instead. I have a professor that I’ve taken for Pre-Calculus, Calculus II, and now Calculus III, but I just wasn’t sure if he’d have the same enthusiasm as the Calculus I professor. And I could’ve asked a philosophy professor for the humanities letter, but I think he would’ve written about the same as the Literature professor. Now, I’m thinking maybe I should do the Calculus I professor for some universities, and the other math professor for some of the other universities because I know they ask how many classes the student has taken with the professor.

I’m spiraling. How important is all this for admissions to very selective universities? Am I worrying too much?

For the highest level, everything matters. Depending on where you are doing DE, they may or may not know how to write a recommendation letter for top schools.

Complicated answer. Right, some college profs won’t write as a hs teacher might. But if you already chose with careful thought, don’t go nuts.

This is where your GC might fill any gaps, in his/her letter. Has there been any feedback from the college profs? Or some from you? He/she can write to your strengths.

Make sure you aren’t overthinking this and other aspects. If you’ve done your due diligence on what H looks for (or others,) you should understand what matters that you show them and just how crazy fierce the competition is, how to try to do your best. Why worry that an enthusiastic prof isn’t good enough? Why try to second guess other profs for other schools?

One good para from lit can do it. Longer isn’t necessarily better.

And what they ask the writer is how long they’ve known you, what classes. It’s about context, not quantity.

Perhaps your GC could add a note to their LOR explaining you were all DE and did not get to know any teachers for a full year. That ought to cover you.