Journalism, whether written word or photographic image, cuts a window in which to see clearly the dark complexities of our world. Truth is the frame around that window. Without truth and the trust that derives from it, the noble profession and service of journalism in high school or society as a whole becomes a wasted exercise in killing trees.
Advisers need to set the tone for ethical standards on publication staffs, whether they use Photoshop or not. They need to work with editors to print a guidebook that sets the bar for legal and ethical issues.