Hi S.,
I had this quandry when enrolling my oldest in school. Both are what I would call multi-racial. Their dad is 1/8 American Indian and the rest African American. I am a mixture of English, French, Spanish, Turkish, Polish, Italian, Irish, Norwegian, and Russian.
I went to the Board of Education as they allowed only one selection for race and I believed ALL were equally important.
Bottom line is that if I chose "Caucasian", and there was any issues with them being treated unfairly, bullied, etc, the school couldn't do anything about it. If I listed them as Black, then the school could step in and get it taken care of. If I chose both, they'd default it to Caucasian. I opted for the Black for their school records.
I also notified the State Dept of Education that they needed to update their systems and forms to allow for multiple selections...the county forms have you "select all that apply", why not the schools?
Good luck...I hope this helps...at least a little bit... :)
~T.