I don't currently work for a Childcare Center but I did a few years back. At the time it wasn't "required" but as far as I know the state laws have changed and most daycares are requiring it. I don't know if it is an actual "law" but I do know that more and more centers are requiring it of all employees. My cousin works for a center in South GA and she too was required to obtain a CDA. Some centers are willing to help you pay for the course. Being part time I wouldn't do it unless they pay for it. As you said, just doesn't seem worth the money/time especially if it isn't something she sees wil