For 2876, the rules test is simply a benchmark, as rules can be taught: if they get a 70 or above, they're eligible. It's just a checkmark, and unless someone really gets 100%, I don't consider it farther than that.
We currently don't have the resources to have a running practice bot, so tryouts have to be really quick. We usually just do a communication test (if you look up "Destination Imagination Instant Challenges" those are usually where I get my ideas from) and a practical test, and both scores are weighed equally.
Another huge consideration many teams don't consider is personality conflicts. Drive teams are going to spend a lot of time together, and fighting is often inevitable. But, if members dislike each other from the start, that's bad.
We have more information about our processes
here,