"Medical school" vs "med school" in personal statement

I’m sorry if this has already been asked; I wasn’t sure how to narrow the search results enough to know.

I’m wondering if saying “med school” is too casual for a personal statement. I’ve concluded that contractions are acceptable if they’re representative of your voice (and easy to read), but shortening “medical” to “med” seems like a different class. Would it come off as lazy or disrespectful although it’s normal language?