TL:DR I’ve found a link that leads to google image search for images labeled for noncommercial reuse. This is handy on iOS where it is hard to get to the Usage Rights Filter, here is the link: https://www.google.co.uk/search?q=&lr=&safe=active&hl=en-GB&tbs=sur:f&tbm=isch.
Coming back to the classroom after 9 years I find I am still interested in searching for images and copyright.…