Diane,
I taught childbirth classes before I was an LC.  I started priming students
for breastfeeding in the first class, when discussing adaptations to
pregnancy, I explained breast changes and stated that they are one of the
first changes that occur because human milk is vital to the infant's immature
nervous, digestive and immune systems.  That little seed often bore fruit in
moms who never intended to breastfeed.  I made sure not to ask how anyone
planned to feed their babies until later in the series, so no one could feel I
was trying to 'convert' them.  I also brought my own babies to class and
nursed discreetly while I taught.  They were great advertising, and did not
mind acting as demonstration models as necessary!
Catherine Watson Genna, IBCLC