Nothing is wrong with whiteboards. I;d evem say they're better. No inhaling chalk dust, dusty erasers, looks clearer, more erasible by common materials, the list goes on.
The list goes on? That's a pretty picture but what I notice about whiteboards is they have their own dry erase dust, the markers require maintenance and often are dry, and ghosting eventually makes the whiteboard look gross. A second order complaint is that the markers smell.
The expense for markers alone has GOT to be many multiples of that for chalk. And chalk doesn't dry out if a kid leaves the cap off, and isn't really damaged by heavy pressure during use (it does break if dropped, though -- I remember teachers using chalk holders to help prevent this).
