MCAS follows the guidelines set forth by the Technology, Education, and Copyright Harmonization (TEACH) Act, enacted in 2002 for classroom instruction.All images from a .gov website are in the public domain and may be used without regard to copyright. This includes all NASA images.
Sites like Disney, Looney Tunes, Peanuts etc. earn revenue from the sale of their graphics & images and do not offer them for free. There are many sites that offer free graphics. A few sites are listed below.
ARS (Agricultural Research Service)
Free Public Domain Images - small collection
JSC Digital Image Collection (NASA)
Natural Resources Conservation Service (NRCS)
National Oceanic and Atmospheric Administration (NOAA)
US Fish and Wildlife Service (FWS)
Clip Art Resources
Animation Factory (3D animations and clipart)
Awesome Clipart for Kids, Teacher & Family
Clip Art Connection
Public Domain Clip-Art
Review section 2531, Copyright Works, in the MCAS schoolboard policiesfor more detailed information.