VANCOUVER, CANADA - Wikipedia, the upstart Internet encyclopedia that most universities forbid students to use, has suddenly become a teaching tool for professors. Recently, university teachers have swapped student term papers for assignments to write entries for the free online encyclopedia.

Wikipedia is an 'open-source' website, which means that entries can be started or edited by anyone in the world with an Internet connection. Writing for Wikipedia 'seems like a much larger stage, more of a challenge', than a term paper, said Professor Jon Beasley-Murray, who teaches Latin American literature at the University of British Columbia in this western Canadian city. 'The vast majority of Wikipedia entries aren't very good,' said Prof Beasley-Murray, but said the site aims to be academically sound.

To reach its goal of academic standards, said Wikipedia's website, it set up an assessment scale on its English-language site. The best encyclopedia entries are ranked as 'Featured Articles', and run each day on the home page at www.wikipedia.com.

To be ranked as a 'Featured Article', Wikipedia said an entry must 'provide thorough, well-written coverage of their topic, supported by many references to peer-reviewed publications'. Of more than 10 million articles in 253 languages, only about 2,000 have reached 'Featured Article' status, it noted.

As an experiment, last January Prof Beasley-Murray promised his students a rare A+ grade if they got their projects for his literature course, called Murder, Madness and Mayhem, accepted as a Wikipedia 'Featured Article'. In May, three entries created by nine students in the course became the first student works to reach Wikipedia's top rank. Their articles, about the book El Senor Presidente by Nobel prize-winning Guatemalan author Miguel Angel Asturias, ran on May 5 on Wikipedia's home page.

Wikipedia has also designated, but not yet published, a student's biography on Peruvian novelist Mario Vargas Llosa, and an entry on Gabriel Garcia Marquez's book, The General in his Labyrinth. Prof Beasley-Murray said the projects took the students four months, and one entry was revised 1,000 times.

Typically, thousands or millions of people visit a Wikipedia entry, and each visitor is able to edit entries, or even flag an article considered unworthy to have it removed.

Working online with anyone watching or editing 'was really hard to get into', said Eva Shiu, a third-year student who worked on the Marquez entry. 'But it was really exciting, and I feel like I've accomplished something,' she told AFP. 'I got addicted to it ... I was up nights until 3 or 4am in the morning working on it.'

The University of British Columbia entries are among some 70 academic projects now registered at Wikipedia.