Is the school inviting you for an interview? Ask the school what exactly is the purpose of the interview. What points they want to discuss. And who else will be at the meeting. Before the meeting, think carefully about what you want to discuss. What are your concerns (with examples) and what is going well. It is useful to write this down for yourself. You can use the notes during the meeting.
You may always bring someone you trust to a meeting. This can be the other parent, but also someone else who knows your child well. Or your child's social worker. During the meeting, always agree on what happens after the meeting. Who will do what? When will there be another meeting? And how will you work well together as a parent and school? Ask the school to e-mail or send a report of the meeting. This should also include the agreements you made with school. You can also always take notes yourself and make a report containing the agreements made. Then share this report with school as well.