Smartboards don’t change the model that’s broken. They just make that model way more expensive.
I can't complain about SmartBoards too much; I taught two years in a district with a whole slew of them. I came in after the money was already gone and most of the moaning had ceased and was able to find a niche using the SmartBoard software to make math videos for our school.
But here's a blog post that takes a critical look at SmartBoard purchases by school districts from the CEO of Inigral, Michael Staton, from his blog Edumorphology: