Go, so everyone knows somebody cares. It raises your kid's profile. Know when report cards and newsletters are due and ask for them. Most schools publish these dates at the beginning of the year. Update the school computer.
Most schools hand out up-date cards only once a year.
Emergency contacts and up to date contacts that work, are essential. Current medical, custody, and access to information instructions, are also be important. Check up on them. Check their knapsack, with your eyes and your nose. Check their money and their stuff.