If our nation’s high school teachers had $20 for every time they had to endure the Depth vs. Breadth debate, they all would have retired to mansions in West Palm Beach.
The debate goes like this: Should they focus on a few topics so students have time to absorb and comprehend the inner workings of the subject? Or should they cover every topic so students get a sense of the whole and can later pursue those parts that interest them most?
The truth, of course, is that students need both. Teachers try to mix the two in ways that make sense to them and their students. But a surprising study — certain to be a hot topic in teacher lounges and education schools — is providing new data that suggest educators should spend much more time on a few issues and let some topics slide. Based on a sample of 8,310 undergraduates, the national study says that students who spend at least a month on just one topic in a high school science course get better grades in a freshman college course in that subject than students whose high school courses were more balanced.