Who most likely is the speaker?

I would like to take the time to thank everyone for coming to John MacDonald High School’s 20-year class reunion. It’s hard to believe it’s been 20 years already. Over 30 volunteers helped plan and run tonight’s event. Norma Clark did an amazing job creating a website for the reunion. Actually, the current principal of John MacDonald High School has asked her to create an identical one for the school. I’d also like to thank Ed and Sharon Winslow for renting the community center and organizing the food and beverages. Great job. Finally, a special thank you to my sister Kate for calling over 400 graduates and asking them to come to the reunion. She always likes to talk on the phone. Thanks Kate!