can a minor be forced to give ua prior to any conviction

[toris dad]

can my daughters school force her to give a ua to return to school, even though she has not been convicted of any thing. case in point my daughter and her friend were in school bathroom , her friend smashed up and made a few piles or lines on counter , whatever. the princaple walked in and busted them. hte friend told th hre princaple that it was hers and nobody else was involved , my daughter was not holding or touching in any way the substance the police came and hand cufffed and escorted them thru school took them to police station. the police chief was grilling them like som e old draggnet episode These are minors without parent or attourney The charge is possesion of a controlled substance without a prescription