|Wikimedia Commons has media related to Category:Educational institutions established in the 1990s.|
- Articles should be categorised by year for 1800 and later, by decade for 1500 to 1799, by century for before 1500, and placed in Category:Educational institutions with year of establishment missing for unknown dates.
|Century:||4th BC | 3rd BC | 2nd BC | 1st BC | 0 | 1st | 2nd | 3rd | 4th | 5th | 6th | 7th | 8th | 9th | 10th | 11th | 12th | 13th | 14th | 15th | 16th | 17th | 18th | 19th | 20th | 21st|
|20th century:||1900s | 10s | 20s | 30s | 40s | 50s | 60s | 70s | 80s | 90s | 2000s|
|1990s:||1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000|
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