I told The Boss that she probably wouldn't be able to count on me for the putative K-4 camp this summer, as I'd be student teaching in the fall. She's been sick lately, and her reaction was a lot more subdued than I thought it would be. She said, "And when were you going to tell me that?" I said, "Today."
I know she's extremely eager to keep me on -- she was near hysteria when I first started taking classes and moved to part-time back in 2005 --- but the end is approaching. I've been at the Job for more than three years now.