The Court of Appeals for Washington State has ruled that the School Board's adoption of Discovery math was not "arbitrary capricious or contrary to law."
From the ruling:
Those challenging the Board decision bear a heavy burden, particularly because it was based on complex and technical factual matters at the heart of the Board's Arbitrary and capricious agency action is "wilful and unreasoning action, action without consideration and in disregard of the facts and circumstances of the case. Action is not arbitrary or capricious when exercised honestly and upon due consideration where there is room for two opinions, however much it may be believed that an erroneous conclusion was reached.
The Court found that the Board did not fail to give honest consideration to the "alleged deficiencies of the Discovering series". It went through, item by item, of the plaintiffs issues with the decision. One interesting item:
The challengers believe the supporters of the Discovering series lack credibility. But it is not the role of a reviewing court to weigh the credibility of experts.
A point I find lacking:
They argue that the evidence of declining test scores proves that ample education is not being provided for all students and that racial minorities are disproportionately damaged by inquiry-based math
But article 9, by its express language, places a duty only on the State, not on school districts.
Well, that's a little tortured, no? The districts exist because of the State and its laws about education.
I appreciate the effort that the plantiffs put into this challenge. The Court points out that there is evidence for both sides that the Discovering math series could hurt or help student achievement in math. Time will tell.