Users can become admins, but here's the requirements:
a. The user must be a current assistant for at least two (2) months.
b. The user must have at least 2,000 edits, of which at least 1,000 are main namespace edits. c. The user must have a clean block record for at least six (6) months, not counting invalid blocks.
d. The user must have support from a majority of all administrators.
e. The user must have support from a majority of all bureaucrats. If the request fails to do so, it requires 75% support of administrators who are not bureaucrats for the request to pass unless otherwise stated.
Oh, invalid blocks are blocks that are overturned or are done by mistake perhaps. For example, if a user is blocked but the admin team says that block was a mistake, the block is overturned and classed as invalid. Hope that helps!