poppycock

[Eijolend]

Of course you should take everything on Wikipedia with a grain of salt. Since everybody can edit it, you get a wide variety of knowledge levels on a subject.

The "wikipedia is so bad"-thing people are usually meant that you shouldn't base your information EXCLUSIVELY on wikipedia, what usually is exactly what the high school students do, that said teacher is talking to. Also it usually helps to have a very basic understanding of the subject at hand to be able to judge if the information is complete crap or not.