I also had the great opportunity to go back to the K-12 school I graduated from and work as a substitute teaching there. It was absolutely surreal to be walking the hallways, not as a student any more, but as a teacher. Very little has changed, and every classroom I waked into, I could remember the exact seat I had in high school. It was also strange to now have the teachers that taught me as I was growing up be my colleagues now! But even that is not as weird as seeing some of the students. My internal reaction throughout the whole day was: wait, you're in junior high now!? When did you get so big??? I remember when you were five!! I can't believe that these kids that I have known for years have grown up so quick! They make me feel older than I really am!
Overall though, I had a wonderfully fantastic day. I was mostly teaching junior high, but I also got to teach Gr. 1/2 Phys Ed which was the highlight of my day. The staff were all wonderfully supportive and I got to see my former teachers again, but from a totally new perspective.