Women who breastfeed could be increasing the chance their child will do well in school.

NBC News reports that a new study by researchers at Boston Children's Hospital found for every additional month a child was breastfed, his or her language skills advanced at age three. They also scored higher on intelligence tests at age seven.

The current recommendation calls for women to exclusively breastfeed for the first six months, and to continue breastfeeding through one year.

However, right now, only a third of women are still breastfeeding by the time their baby reaches six months.