I just spent my last four days off, two Sundays, Thursday and Friday, testing high school girls in nearby schools.
The "oral" Interview Test is both fun and the most complicated to prepare for. It's not just a "chatty" talk.
There's a structure and very clear rubrics, or guidelines on how to grade it. Sixty points are about a research project. To get full points, the students are supposed to talk for three minutes and then answer questions. If they don't do that, and it does take preparation, then I have to take off points. Unfortunately, not all the teachers train the kids for that requirement. Also, in some schools, they have the test a year or two after they've done the project, so it's not so fresh in their minds.
I really do enjoy the job of testing, because I can discover how wonderful the younger generation is.