The Evidence Crisis in Math Reform, Part 2

Rahim Nathwani

A few weeks ago, I wrote an article showing that a YouCubed paper presented data that didn’t match the public record.

Before writing that article, I replied to the X post in which the co-author, Stanford University Education Professor Dr. Jo Boaler, shared a link to the paper. She did not respond. I then filed a public records request with Healdsburg Unified School District (HUSD). That request led to a series of email exchanges with the paper’s other co-author, Dr. Erin Fender.

Dr. Fender was responsive from the start, even though she’s a busy school administrator. She runs day-to-day operations as both Director of Alternative Education and Principal of a community school at the Sonoma County Office of Education.

She told me that, although the chart was labeled HUSD, it in fact showed data from one specific school: Healdsburg Elementary School (HES). She shared the spreadsheet in which she had assembled the data. Unfortunately, the discrepancy wasn’t just a labeling problem. Even the HES data didn’t match the spreadsheet:


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