This is often not the case, but you will have a hard time convincing parents of that. Curriculum Night is an opportunity to build parents' confidence in you as a teacher. When parents make unrealistic suggestions, fight the urge to talk about what you can't do. Parents often do not know what it is like to teach more than 20 children at once, and sometimes they make suggestions about classroom operation that you know are not feasible. Focus your answers on what you can do.
Politicians frequently turn negative questions into positive answers.
Leave some time at the end of your presentation for questions. Many parents today are accustomed to questioning the professionals in their lives. Anticipate the difficult questions and prepare responses. Take a few minutes to think about your class. Consider all the questions you hope parents won't ask.