Here are some of the ways in which school-aged children cope with stress:
1. School age kids have developed more sophisticated emotions and patterns of thinking, so that their cognition is more similar to that of adults. (This is likely the reason that, throughout the middle ages, children were generally considered young adults at around the age of 7 or 8.)
2. At around age 7 a child's social development takes off, and they become acutely more aware of things like shame, ridicule, social expectations and peer pressure. They become more aware of how others perceive them and monitor their behavior accordingly. Their self-identity becomes heavily dependent on social measures.
While this is an important part of development, it also opens the door for them to be injured through social judgments against them or their family, or by way of abstract social meaning/stigmatization that society attaches to certain issues.
3. Many children this age are natural worriers. They find themselves becoming more aware of different issues around them yet are still largely helpless to do anything about it. Nor are they always forthcoming with these concerns. Parents can help by keeping them informed of what's going on and offering unsolicited statements of reassurance. Grade school children also benefit when parents can find a way for them to help out with the situation, even if that help is only symbolic.
4. Elementary school kids are most likely to take on role of protector, hiding their fears and grievances in order to protect their parents from additional distress. They also frequently consider it their role to "look out" for everyone in the family.
5. Elementary school kids are especially sensitive towards ridicule or threats directed at their family. Their world still revolves around family, and any type of insult, injury or stigma directed at their family can impact them just as profoundly as if it were directed at them personally.