Aotearoa / New Zealand

Hey, I´m a music teacher from Germany. As part of each lesson I show my students musical (and music-like) traditions from all ages and places, and let them guess where and when this music was created. A while ago I´ve shown them a haka of the All Blacks, first audio only so they could guess, then with the video. Since then, a group of 11 year olds is constantly asking me if we could perform a haka in the group. I myself would not be opposed to doing so, but I would want to do it with the necessary respect. So I thought I´d come here to ask: Would you find it disrespectful if a group of german children and their teacher performed a haka? If the responses here are positive, I´d follow this Wikihow for the actual performance. Thanks in advance for any responses.