FWIW Parents evening is seen by a lot of people as:
Parents sit down
Teacher tells Parents about any problems
Parents stand up and leave
If you have a parents evening, it might be worthwhile thinking of a question or two to ask about each specific subject.
"DC struggled with aspect X of subject Y. Do you think they're better at it now?"
"DC doesn't see the point of subject Z, I'm not sure what to say to them. Can you help me out?"
"DC seems to get a lot of homework from your class, how can we best manage this?"
"Where do you think DC is, compared to the others? How can they improve?"
"What are the most important things for DC to revise before the exams?"
etc etc etc
If you care to ask, the teacher will happily answer all of the above and more. It's not just checking that the status quo is fine, it's also working out how to improve and advance.