Katherine Lee is a former editor at Parenting and Working Mother magazines, and the mother of a 7-year-old son. She has written and edited numerous articles and essays on parenting and children's health and development for Parenting, Working Mother, Wondertime, Ladies' Home Journal, EverydayHealth.com, Sprig.com and About.com.

As an editor and writer at Parenting and Working Mother, Katherine worked with leading pediatricians and child-development experts such as William Sears, MD and Barbara J. Howard, MD. She has also spoken about a wide range of parenting topics, from how to handle tantrums to teaching older children about money, on various national TV and radio appearances. She was a contributor to The Imperfect Mom: Candid Confessions of Mothers Living in the Real World, an anthology of essays published in 2006.

Katherine holds a B.A. in English from Northwestern University, where she took numerous reporting and writing courses at the Medill School of Journalism.

The early grade-school years are an exciting time. Homework, friends, budding rebellion, curiosity about bodies and gender differences -- this developmental stage after preschool and before the tween years is an action-packed period of physical and emotional development.

As your child makes his way into the world of school and increasing independence, he will be filled with curiosity about himself and his world as he faces new challenges and conquers new horizons.

I, like so many parents I know, have found other parents and child-development experts to be invaluable sources of information and advice. I am so excited to have the opportunity to share what I've learned, and hope that you can find the information you need when you have a question or problem. You are not alone!