Universal truths about school photos:
1. Your child will unearth the most outgrown, stained or otherwise inappropriate piece of clothing he or she owns, and insist on wearing that.
2. Attempts to convince the child that another outfit would be better will lead to crying, lying on the floor, and ridiculous statements such as "I want to wear both of the blue skirts!"
3. Pieces of clothing that are normally among the child's favorites will be rejected in a fit of pique.
4. The child will announce "I don't want to smile with my teeth showing. I'm going to smile like this," and display an expression that makes him or her look like a large trout*.
5. If at all possible, the school will schedule the photo-taking to happen after lunch, allowing your child to spill food all over his or her face and clothing first.** If the afternoon isn't available, they will at least postpone the photos until after morning recess to maximize opportunities for the child to get dirty, sweaty and windblown.
6. Luckily, you have the most beautiful child in the world and he or she will still look adorable when the photos come back six weeks later. But you'll be exhausted.
* P would never smile in pictures either. I have many shots of him looking ready to do serious bodily harm to the photographer. It was a shame, as he had perfect teeth and a really lovely smile.
**In G's first-grade picture, there's peanut butter all over her face from the sandwich she ate for lunch.