For the last 4 years I have taught a Photo Club, but mine have been 4th and 5th grade Boys and Girls Club members.
Your 9th and 10th graders won't be much different. I found that keeping the technical stuff to a minimum was best; about the most important technique was how to hold their cameras. Things will be easier if they all have similar cameras and that you know how to help with their questions about the functionality. Cell phones and point-and-shoot cameras are just fine. I found that teaching by projects work well for most children such as making pictures with texture one week, contrast another, point-of-view, props, etc. Kids could care less about technicalities of f-stops, ISO and shutter speeds. Udemy courses"Become a better photographer 1 and 2" are inexpensive and will help a lot. Children will work harder in teams and toward a goal like a photography show or their pictures in the newspaper. I will be happy to talk with you. email sept21@windstream.net

Thanks. I spoke with the rep. We did a "reset" without solution then concluding that the only thing to do was to send them (3) to the Nikon repair. (The previous repair estimate was > than what we paid for them.)

Thanks for the tip. I am not sure how, but I will try.

Our Boys and Girls Club (4th and 5th grade) have several S3200's. Three of them have developed dark monitors: the data icons remain on the screen. All of them returned to normal after just sitting still, turned off, only to fail again. One was sent for repair while still under its warranty period to be returned with nothing found to have been wrong. The repair people have not responded to my inquiry. Are there any suggestions of why it happens and how to prevent another crash?

You should return with better vision. The drops can leave a little film over the eye but most likely it is because the fluid in the eye in front of the pupil which changes when the incision is made. It will return to normal amounts pretty soon. You may experience better color as well as acuity when recovered. Also don't forget to adjust the focus on the viewfinder if your camera has one. I have been pleased with both my cataract surgeries.