[Jabrov]

What demographic? Do you have a link to or some additional information about the data source? Or are you just speculating?

[yorwba]

The source is linked under each graph in the article.

[isleyaardvark]

The source linked under each graph says "No significant change in fourth-grade reading scores across student groups compared to 2015" and "No change in score gaps among selected racial/ethnic groups in reading at grade 4 compared to 2015".

If OP thinks removing a certain demographic changes the results they should state what demographic that is.