What the damn hell does it even matter?
Leave 'em up. Start a new wall with the date of the Performance Lab results, inaugurating a new era of standardized testing and the methodology used to determine this. Good way to get some of the students in that area better handle on this and so on.
There will come another day when Boyd, or someone else, decides on a new standard. In 2022 or some other year, we will all be told that the current method Boyd is using has been replaced. Hopefully by an even better idea from the Performance Lab.