Investigators said it happened April 14 at Cliffdale Elementary School during a book fair.
The woman allegedly got into a school nurse's office and took $170 and the card from a purse.
Surveillance video later shows the woman in a Family Dollar Store using the stolen credit card to make purchases.
If you can identify the suspect, or have additional information about this case, please contact the Cumberland County Sheriff's Office at (910) 323-1500.