[magnets]

My first post was not clear. I'm not trying to say that lead free solder can not be used well, but that it is much harder to have a high school student who has never seen a soldering iron before do a good joint with lead free solder. If you take the time, it is definitely possible to cause the lead free solder to flow and make a good connection. But it is very easy for an inexperienced student to just get the solder to form into a cold solder blob.

Also, in commercial electronics it is a proven fact that lead free solder is inferior and has a significantly higher rate of failure.