Images are important in education. They are used to illustrate teaching points, clarify information and inspire. Images convey emotions, capture the imagination and express powerful ideas. And we use a lot of images in schools.
Generally, we glean these images from the various websites, aided and abetted by Google (other search engines are available). After discarding those that are in appropriate and of poor quality most searchers are still faced with hundreds if not thousands of free images to use as they see fit.
Except that these images are not free for us to use however we like. Just like images, videos, pieces of music and text in the physical world, online or virtual resources are covered by copyright. And using copyright materials in school could lead to prosecution and a hefty fine!