[GlibMonkeyDeath]

Here is the study for Massachusetts (saving you several layers of summary articles):

https://wheelockpolicycenter.org/wp-content/uploads/2023/11/...

In every category, emergency/provisional licensed median values were lower than licensed teachers, including performance evaluations, although these results didn't reach 95% statistical significance of rejecting the null hypothesis. Even if they didn't reach P < 0.05, when all of the results point in one direction, I am not so sure I would completely agree with the top-level headline as it is stated.

[dan-robertson]

The first plot in your link certainly looks inconclusive. It doesn’t look very close at all to meeting the statistical significance bar and I think it would be an error to conclude that it shows the emergency/provisionally licensed teachers were worse. But I wonder if other things might be going on, eg maybe COVID meant the emergency/provisionally licensed teachers were also disadvantaged from having less practice. And on the other hand, lots of them will have gotten much of the requirements for a license so it doesn’t really show much about the long term effects of changing the license requirements.