system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:Why does the Board of Education and teachers nationwide (may be global) belittle Wikipedia's credibility and resourcefulness?

I find Wikipedia to be a database of thousands of years of information, all for free, no ads, completely full of wonder. Why are teachers so against it when it usually provides better information than standard articles of the same subject. Thorough explanation please!

Edit: Thank you all for all of your amazing explanations!
gpt
Wikipedia is what most academics would consider a "secondary" source. The articles rely on what actual researchers discover, but it's still a rehashing (in a perhaps distorted way) of what original researchers have learned. Teachers would prefer you just go to the source, not a summary of what the source said. Wikipedia is Cliffnotes, if that makes sense.