I usually start each entry with the date, host school, level, and partner's name.
It's not exhaustive, but I generally try to include information such as:
- Anything the partner shares about his/her officiating background (i.e. partner has officiated 9 years; calls varsity, but also likes to help out newer officials in sub-varsity games).
- Was the game very physical?
- Did I have to make any tough calls?
- Were there any unusual situations? if so, were they handled correctly?
- Did my partner offer any useful/constructive feedback during or after the game?
- Anything else I found noteworthy or significant.
Last year, as a rookie, I also made it a point to identify 2-3 areas in which I thought I did well and 2-3 areas I wanted to improve in the next game. While I didn't follow that as strictly this year, I did make it a point to record anything good or bad that stuck out in my mind regarding my on-court performance.
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How much I write depends on the games, largely. A blowout game where the clock stays running most of the time with a minimal number of calls to make doesn't need the same amount of writing as a game where both teams are rivals, the game is very chippy, and my partner & I have to serve up IFs or tea for two.
I suppose my writing has a twofold purpose for me. (1) I want to see if I really do work on improving the areas that I (or others) identify for improvement. (2) I like the idea of having some sort of running log of my officiating career.