It is really worth exploring the Schools Wikipedia website. Unlike, the original Wikipedia, the content has been reviewed and edited by the academic community. For example, take a look at the following:

First World War

http://schools-wikipedia.org/wp/w/World_War_I.htm

Second World War

http://schools-wikipedia.org/wp/w/World_War_II.htm

Adolf Hitler

http://schools-wikipedia.org/wp/a/Adolf_Hitler.htm

Joseph Stalin

http://schools-wikipedia.org/wp/j/Joseph_Stalin.htm

Lenin

http://schools-wikipedia.org/wp/v/Vladimir_Lenin.htm

Leon Trotsky

http://schools-wikipedia.org/wp/l/Leon_Trotsky.htm

Winston Churchill

http://schools-wikipedia.org/wp/w/Winston_Churchill.htm

John, I checked their website and can't find any reference to academic review. As far as I can work out, it's been checked by volunteers fro SOS Children who have deleted anything "adult", which isn't quite the same thing!

I haven't seen any academic review reference, either.
And some parts of the World War I section and the related links on the page
contain a biased attitude towards certain incidents that took place during the period.

Some of the information given there is based on memoirs instead of actual documents.

You are right that there is no seperate academic review.

The volunteers (who were mainly students or staff at Cambridge University) did two things: they marked passages for deletion where they were vandalised or obviously biased or obviously adult in nature and they choose which version in the article version history should be used as a base for the Schools Wikipedia. The review of Wikipedia by Nature a couple of years ago (which said Wikipedia had a lower error rate than Britannica) found that in almost all cases there were previous versions of the article without the errors, so looking through for the best version by the most credible editor was considered worthwhile.

In general on Wikipedia itself main stream articles like WW1 attract a considerable debate and I am not sure that any account can be free of "biased attitude". As John has said, Wikipedia being facts based is a disadvantage in history. However I have just looked back through [url=http://schools-wikipedia.org/wp/w/World_War_I.htm]WW1[/] and cannot see anything obviously wrong with it. There was a lot of debate on some elements of it but it is hard to avoid that.