serious question from an alum

Hey ladies,

I’m an Alabama alum (‘15), and I was in an old row sorority while I was there. I wasn’t really involved with recruitment outside of the whole-chapter parts, so I honestly don’t know much about what goes on beind the scenes with regards to rec letters, so I had a quick question for y’all (I already reached out to my sorority’s recruitment chair about this last year, but her answer was generic and vague).
I am now a high school teacher in Tennessee, and several of my students are going to Alabama and going through recruitment. They’ve asked me if I would be willing to write them a review letter, and I absolutely would, but don’t know if that would be more harm than good considering I know them from an academic, rather than a social, perspective.
I thank y’all in advance for your help. I was actually googling advice about this/trying to find out if this is a normal occurance when I stumbled on this page. Any advice y’all could give would be great!
Roll tide always!