Depends on the school. My school claims it’s P/F but it’s not. A’s are possible but if you’re concerned about rank you can be completely average during pre clinic and as long as you’re a beast in clinic you’ll be near the top of your class. It’s school dependent. If I could go back, I’d study way less. Didactics are mostly BS you’ll never use anyway. At least 95% of it is unless you’re shooting for OMS. But the tests aren’t bad. Easier than undergrad tests just way more material. You honestly don’t need to understand concepts in depth as much as undergrad. A lot of it has to do with goals too. I’ve went back and forth between perio vs general dentistry but ultimately decided on doing an AEGD and going the general dentistry route. I’m top 10% which opens some doors for the really really good AEGDs so the rank can matter regardless. Just while your friends are struggling to get a 95, study to get like a 78 and spend the rest of the time practicing. Then you’ll have a leg up in clinic when things matter.