The way the income should be treated depends upon the box in which it is listed on your daughter's 1099-MISC.
Amounts listed in box 7 are considered to be self-employment income and must be reported on Schedule C. The good news is that any expenses she had in generating this income, such as the purchase of notebooks as editor of the school publication or uniforms she had to buy for the internship, are deductible from her income. The bad news is that the net income is subject to self-employment tax.
Amounts listed in any other box may or may not be subject to self-employment tax, but only Box 7 amounts require Schedule C.
