Technology funding in school districts (in my area these are tax levies) is already insanely high; mostly because we're pushing for tablet devices in schools driven, behind the scenes, by extremely lucrative vendor deals.
Without adequate training, the related curricula are severely limited and thus the added benefits when compared to related cost are low, if at all positive.
Now, this research, as well as the districts, are rightly saying the teachers need more training in order to leverage the technology effectively; however, what really needs to be understood is just how much training is really necessary and whether the tech gap between teachers and their students can really be mitigated.
It is my unfounded opinion that it will never be mitigated enough as teachers are not usually well enough equipped at their own subject matter, let alone keeping up with the taxing knowledge demands of technology.
What we need to do is take a step back and ensure that these additional tax investments in technology are actually doing anything to further student development and because they aren't, think about what we can do to actually concentrate on doing that instead of buying the new and shiny and letting it, effectively, collect dust in the corner while levy after levy is passed to support it.