When choosing photos for your page make sure they are bright enough and in focus. All photos should be clear and students should be easy to recognize.

Photos to avoid. Shots that are so small that you can't see or recognize the subjects. Improper exposure caused by a bright light of window behind the subject. Photos that are too dim and do not have a clear focal point or subject. and Lastly, shots that are out of focus.

I have seen some very good photos takes recently, and plenty of them. There is no reason why a poor photo should be used on any page given how many excellent photos are available.