2. Keep expectations in line with stages of development
Ask any teacher and she'll likely tell you parents often have unreal expectations for their kids. She doesn't expect a five-year-old to be able to sit and focus for an extended period of time, so you shouldn't, either! For younger children, classroom activities are often rotated every five(!) to twenty minutes. Make sure you give your kids breaks and don't get upset when they need to switch activities more quickly than you do.

Moreover, it's normal for children to do things like make noise and messes, so while it's still important to set expectations, also let your kids be kids. If you want to learn more about what behaviors are normal for different ages, check out the book Ages & Stages: A Parent's Guide to Normal Child Development.