From the 2nd paragraph: “A great deal of empirical data have been collected. However, they have so far been less than convincing and not consistent enough to justify the expense of the additional classrooms and teachers that would be required.”
Hm, that might be changed with the addition of the evidence from Wisconsin or California. That would be because, I now realize, the page is 13 years old (curse you, google). The “tension” in the evidence is really the old, small studies vs. the newer statewide studies. Though there is still some uncertainty, the newer state studies seem to have won.
From the 2nd paragraph: “A great deal of empirical data have been collected. However, they have so far been less than convincing and not consistent enough to justify the expense of the additional classrooms and teachers that would be required.”
Hm, that might be changed with the addition of the evidence from Wisconsin or California. That would be because, I now realize, the page is 13 years old (curse you, google). The “tension” in the evidence is really the old, small studies vs. the newer statewide studies. Though there is still some uncertainty, the newer state studies seem to have won.
ah, ok.