Magazine pic's bring the world to the classroom, just as slides, art
books and the internet do. But as others have said
so well, they need be incorporated in unique ways and within reason.
But in response to someone's point about copyrights and plagiarism:
I don't worry too much about it. As long as the student or artist
acknowledges they had worked from a photo or were inspired from a magazine
scene/image. There are really infinite ways one can alter one's art work
from the photo or scene they are working with. A camera is a tool, as is a
paintbrush or this keyboard.
And let's not forget that books and magazines of 40 & 60 years ago were
loaded with artist's illustrations, from commerical advertising to
cover art to story illustrations. Photography came along and changed much
of that and many artists were put out of work.
As these 'up & coming' photographers studied art and
design and used their art backgrounds to become professional
photographers, we as artists and art teachers should be able to in
turn use photography and photographers!!
A penny for your thoughts, a photo from my 'love'