In my last post, I described conversations with three teachers that revealed their different views about what teaching is.
The most persuasive was a teacher who focuses on retention—and thinks teachers are making a mistake when they change topics as soon as they see that students have comprehended the topic at hand.
As we spoke, I thought about what happens to me as I listen to NPR. Even when I find a story really interesting, I’m only able to remember it well if it is on a topic I already know well. Most of the time, the stories are on things I only know a bit about. If I try to retell them, the details are fuzzy; I mix up the key people and events and can’t convey much. It’s an odd feeling—I fully comprehended the story at the time, but I don’t realize how little of it I’ve retained until I try to tell a friend about it.
To really learn the story, I’d have to comprehend it, then study it—quiz myself, practice those details that make the story coherent, and quiz myself again. I’d also need to revisit the material periodically—hopefully adding to it, but at a minimum refreshing my memory. That’s the type of learning that would enable future learning, including deeper comprehension each time new details are added to the web of knowledge growing in my long-term memory.
The retention-focused teacher I spoke with was very intentional about her instructional time. She argued that if a topic was worthy of mentioning, it was worthy of fully teaching—teaching so students could confidently talk about their new knowledge. She saw the school year as far too short, and each class as a precious resource to be fiercely protected. She saw instruction aimed at coverage and even comprehension—anything less than retention—as a waste of time. And, she accepted that her approach meant that she taught fewer topics, and thus had to carefully decide which topics merited class time.
One great benefit of this careful weighing of topics was that she had gotten really thoughtful about embedding skill development in serious academic content. While some of her colleagues taught skills with “fun” content, she eschewed that as inefficient. For example, she taught grammar with sentences that refreshed students’ memories on key content they were learning in science and social studies—no grammar lessons with sentences about basketball or cartoons in her classes.
Reflecting on our conversation, my mind returned to Daniel Willingham’s article on familiarity vs. recollection. Along with that article, he has several useful tips for ensuring that students don’t mistake their familiarity for real learning. His tips focus on “jostling students away from a reliance on familiarity and partial access as indices of their knowledge, and encouraging (or requiring) them to test just how much knowledge they recall and understand.” He recommends, for example, that teachers “Make it clear to students that the standard of ‘knowing’ is the ‘ability to explain to others,’ not ‘understanding when explained by others.’”
This pretty well sums up what the retention-focused teacher I spoke with learned over many years of teaching. So it raises a question for another day: why didn’t she learn about the dangers of familiarity (or mere comprehension) and the necessity of recollection in her preparation program or in ongoing professional development?

Writing is a great way for students to explain, solidify, and gauge what they have learned. (Image courtesy of Shutterstock.)