Sadie attends half-day kindergarten. She goes to school from 7:55-10:55 and then a little bus brings her home and drops her off at my front door. She is the only one on the bus everyday. That is because everyone else attends kindergarten full-day. The half-day option isn't well publicized and there are very few who take advantage of it. Those who do often end up switching to full-day by the end of the first semester. I've chosen the half-day option with all of my kids and only switched one of them to full-day before the year was through. That was Sam, our first, and I regretted it. I still don't know why I didn't switch him back.
So, when my kids teachers ask if I'd consider letting them stay all day, I simply tell them why I always choose the half-day option. Because they let me. And they'll never let me again. Kindergarten is my last chance to spend a few extra hours a day with my kids at home with me and I'll take it. I just wish it was an option every year!