I found a website licensing images under CC BY-NC-ND license.
https://www.npg.org.uk/collections/sear ... &x=75&y=11
There are three licenses on the web: Professional, Academic, and Creative Commons. In this case, if I want to use this image in the classroom, non-commercial book or film, I have to buy a license according to the webste.
But I noticed that, according to CC BY NC ND license,
And when I download the image, I will check the box say that "To download an image you must read and agree to the full agreement terms and conditions. This is a required field."No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
It proves that the CC license is the only and full license I should comply when I download the image from there. So I understand that as long as I follow the CC BY NC ND license, I can use it in the classroom, non-commercial book or film, too. Because the CC license can be the full license and I don't need to follow other license terms.
I am not sure if this is correct or not.