zoossh
Senior Member
you cannot use these images for any commercial purpose or your website
why not? since you didn't commission those pictures at the appropriate rate (actually none at all), the copyright of the photographs will naturally goes to the photographer.
it is ok if you would not pay the PA as an exchange for teaching. it is also ok for the PA to give a copy of their photos to for example a wedding couple as a gift in exchange for the learning experience they gain. but i see no reason for taking away their copyrights.
if they take those pictures, they should be able to post it on their website as their own. if they are commissioned by a paying party who subsequently owns the commerical rights of the pictures, they cannot use these pictures for other commercial purposes. but outside of these circumstances, i think there is no moral grounds or legal binding rights to it.