That from yesterday’s invited session of talks sponsored by the American Physical Society’s Forum on Education at the society’s March Meeting.
I wrote the quote down by hand, so it might not be perfectly accurate. But the gist of the comment is accurate.
Sadler also said that students whose high school physics courses focused on depth of understanding rather than covering lots of materials performed better in their college physics classes.
Sadler is a Senior Lecturer at the Harvard-Smithsonian Center for Astrophysics. I often quote his result published with Robert Tai in Science [Vol. 317, Pgs. 457-458 (2007)] that says students who have taken strong high school courses in chemistry and physics are more likely to succeed in the college-level chemistry and physics classes, and that calculus improves college science performance in all subjects.