Whenever I check the teacher message boards that I am a part of, I always see many requests for ideas for culminating tasks for the various units that a teacher teaches throughout the year. This stems, I believe, from the backward design process where teachers begin to plan their new unit of study by first planning the culminating activity. However, if you follow this blog, you may have realized that I am moving away from the teacher-directed model of instruction and moving towards an inquiry approach where the students and teachers authentically develop the culminating task within some standard parameters.
The problem, as I see it, is not in having a culminating task but in planning an event or task that limits a student's creativity or expression in order to do what the teacher tells them. Placing restrictions on what students do to show you what they learned is where you are restricting student creativity. I know that there is a lot of anxiety as teachers when we don't have complete and total control. I get it, I myself am a recovering control freak (ok maybe not so much recovering), but I have changed the aspects that I control within the classroom. At the end of the unit, if every student's product looks the same then how creative and differentiated is that really.