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Awesome, that sounds great. I may need to PM you to get some more details if you are willing to guide me. Doge is a great suggestion especially now that its in the news.
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Sure... I'd be happy to help

It's been a couple of years since i last solo mined, but i'm pretty sure i'd still be able to get everything setup.
By the way: it might not be a good idear to take pictures of your students holding paper wallets... If somebody is able to read the private key, or restore the qr code, they can rob your students, unless you used encryption and a strong passphrase...
I really doubt that some scammer/criminal will be patiently waiting for those people to post a picture holding their private keys,in order to rob the satoshis,that are sitting in their wallets.What's the point of robbing a few satoshis?It doesn't make sense.

Anyway,I think that OP has access to free electricity,provided by his school,so there won't be a problem to mine a few satoshis,by using old mining equipment,even though the mining won't be profitable.
We desperately need more Bitcoin teachers around the world.
Good luck with this project.
I've seen people scam for cents... I wouldn't be supprised if somebody analysed a picture to rob a student out of a couple bucks...
What if the price skyrockets? What's only worth a couple bucks now might be worth a couple hundred in a couple of years... What if this picture still floats around by then?
Never share your private keys, never put yourself in a position where you might have shared your private keys... They're private, keep them that way, even if it's only for a couple sats.