Share as much or as little as you would like, in good reason. Do not share any biased opinions about the student. Stick to the facts. You can say "I enjoy having them in class" or "They are so helpful" but try not to focus on things like, "They won't stop talking" or "They are really behind". Always have a plan for what you are going to say, and bring notes of data if you need it to support your statements.

You do not need to go into detail about anything you do not want to. I think going over their work and showing the parents the amount of effort they are putting in is important. If the student is having troubles, do not be afraid to express your concerns.

Share what you believe is necessary. However, remember to stay on track and always consider the main reason the parents are meeting with you in the first place. If it is a meeting about their child’s progress, stick to factual evidence of their progress and what you believe they need to work on. If the conference is to discuss the concerns you have for a student who is having trouble in class, the most important thing to remember is you will all be there to discuss what everyone can do to accommodate or support the student's well-being within the classroom. You can encourage and recommend ways that parents can support their education at home, but you have to be careful about not overstepping boundaries with the parents or the student you are trying to help. As always, negative student actions or behaviors should be denounced, but never the student as a person. As others have mentioned, try to stick with factual truths rather than your opinions on the student to avoid conflicts, and remember to write down what you need to remember.