knute, I'd do one of three things - depending on how strongly you feel about it:
1) talk to the teacher about your concerns, as well as to the lead of the IB program (if there is a teacher lead).
2) have your dd talk to the teacher about why it seems unnecessary and counter to IB mission to have to have your parent sign off on this.
3) Accept it and just sign without requiring the 45 minutes.
And a few thoughts from me, re how I'd take it ... um.. 45 minutes for homework per night for *one* class - is the teacher nuts? How many classes does your daughter have, and when is she supposed to have a life outside of school? Why would a responsible high school junior need to check in with a parent re homework? Isn't the point of schooling to develop independent adults? And what if the homework doesn't take 45 minutes? What if your daughter is doing extremely well in Spanish with only 15 minutes a night? Why force her to study for a longer period of time?
(can you tell I'd be an unhappy camper with this lol!)....
Let us know what you decide to do -
polarbear
