I think this might be more in line with an organism that doesn't use O2, rather than one that does but can exist for periods of time without it.

http://en.wikipedia.org/wiki/Methanogen

While I agree with you, the issue usually isn't the small percentage of technically savvy people who use this, but rather the majority of folks looking to "plug and play". These are the security gaps that allow zombie DDoS attacks to happen so easily, as they open up easy access to lot's of similarly configured boxes.

Try getting a project for the club to work on for the school. Where I taught, I used the computer club to build computers from donated parts for a computer lab at the school. The students were able to learn about computers, and the administration got a free lab. Parts are easier to come by when it is for a school, so try local businesses and even other schools! If the club had a project to build a lab, and accomplished this goal, they would be seen as a good, contributing organization. Keeps the administration off your back.