girls who know IRS law or accountants or anyone!!!

what does this mean...

Tax-qualified dependent child (A dependent as defined under 26 U.S.C. Sections 104, 105 and 106)

?????

I am looking to go back to school full time and possibly stop working, but to go under my mothers health insurance I need to be tax qualified whatever in addition be being unmarried and under 25, which gives me until 2 years to stay on her insurance before i get married...
Anyone have any clue as to what it means...I wasnt claimed as her dependant last year, but i dont know if that matters...

In general, to be a taxpayer’s qualifying child, a person must satisfy four tests:

Relationship — the taxpayer’s child or stepchild (whether by blood or adoption), foster child, sibling or stepsibling, or a descendant of one of these.
Residence — has the same principal residence as the taxpayer for more than half the tax year. Exceptions apply, in certain cases, for children of divorced or separated parents, kidnapped children, temporary absences, and for children who were born or died during the year.
Age — must be under the age of 19 at the end of the tax year, or under the age of 24 if a full-time student for at least five months of the year, or be permanently and totally disabled at any time during the year.
Support — did not provide more than one-half of his/her own support for the year.

Additional Rules
While the four qualifying child tests generally apply for the five tax benefits noted above, there are some additions or variations for particular provisions:

Dependent — a qualifying child must also meet these tests:

Nationality — be a U.S. citizen or national, or a resident of the U.S., Canada or Mexico. There is an exception for certain adopted children.

Marital status — if married, did not file a joint return for that year, unless the return is filed only as a claim for refund and no tax liability would exist for either spouse if they had filed separate returns.