Our mission is to ensure that all young children in Orange County arrive at school healthy and ready to succeed. The mission of the Orange County Partnership for Young Children is to ensure that all young children in Orange County arrive at school healthy and ready to succeed. TO ENSURE THAT EVERY CHILD IN ORANGE COUNTY ARRIVES AT SCHOOL HEALTHY AND READY TO SUCCEED. WE FOCUS ON THE EARLY YEARS OF A CHILD'S LIFE, FROM BIRTH TO FIVE, WHICH IS THE MOST CRITICAL TIME IN A CHILD'S DEVELOPMENT.