I think it is probably worth considering that while some may view regular check ins with teachers as a poor use of the teachers time, I think the opposite may well be true. A few minutes spent making sure you are both on the same page and complimenting each others efforts instead of pulling in opposite directions or missing things would often actually decrease the time the teacher spends trying to work through issues, getting students up to speed and putting out spot fires with disgruntled parents. Time spent preventing an issue today is much better than the two or three fold time spent when it the issue rears comes to the surface bigger and trickier 6 months later. Obviously disruptive communication like breathing down a teachers neck, micromanaging and having unrealistic expectations about how a student is or should be travelling is going to be problematic for a teachers time, but there is plenty of room between 'haven't spoken to the teacher all year' and 'lengthy tongue lashing every week' for effective communication to happen and save time down the track.