Coach Joe said my child had a PR in the 800m race she ran in today. What does that mean?
“PR” stands for personal record. Your child ran that particular event—the 800—faster than she ever had before (in a timed race). Congratulate her!

What should I eat before a cross country race?
As endurance performance specialist Frank Pucher points out in this article, there is no “magic formula” for what to eat before you run. The suggestions he lists, however, are excellent guidelines.

Do I need to bring anything in particular to the meet?
See coach Joe Tranchita's Things to Bring to a Meet.