Data -- both raw and displayed in visualizations -- can clarify or confuse,
confirm or deny, persuade or deter. Students often learn that numbers are
objective, though data in the real world is rarely so. In fact, visualized data --
even from authoritative sources -- can sometimes be anything but objective.

Librarians and classroom educators need to be as fluent with quantitative
data as they are with text in order to support high schoolers as they engage
with data in formal and informal settings. We asked contributors to this
volume -- experts in high school curriculum, information literacy and/or
data literacy -- to explore the intersections between data and curriculum
and identify high-impact strategies for demystifying data for educators and
students alike.