Feedback: The Closed Loop of Learning and Instruction

Education is widely accepted as a traditional trio: learning, testing, and assessment. That last one is the heavy lifter, requiring evaluation across multiple levels and timeframes. But if testing is the diagnostic, feedback is the cure. As a correcting mechanism, feedback can adjust, rescue, and drastically enhance the entire learning process. In fact, feedback from the instructor to the student becomes the quintessential connection between the two.

As Ken Blanchard famously put it, “Feedback is the breakfast of champions.” Though if we are talking about college students pulling all-nighters to finish a project, it might be more accurate to call it the midnight pizza (and fourth espresso) of champions.

Timing is Everything

Can the level of feedback change based on the nature of testing? Absolutely. Can feedback happen in real-time? Yes to both!

Instructive interaction in the classroom provides students with real-time feedback—those immediate, beautiful “aha!” moments where a concept suddenly clicks. But post-testing feedback is a different beast entirely. That needs to happen over a very short period of time.

If you wait three weeks to hand back a graded assignment, the student has already forgotten what they wrote. You are essentially offering them a map for a road trip they finished weeks ago—and honestly, they've probably already crashed the car and moved on to the next unit. Feedback has an expiration date; when it goes stale, it loses its power to correct.

The Good, the Bad, and the Ideal

Let's look at the evolution of our grading comments, and why we need to dig a little deeper than we usually do:

Basic feedback tells the student what went wrong. It is the equivalent of a giant red “X” on a page. It points out the error but offers no lifeline. It creates anxiety without offering a solution.

Expanded feedback goes a step further and provides the right answers. This is better, but it is still just giving them the fish instead of teaching them how to fish. They know what the answer should be, but not how to get there next time.

Ideal feedback is where the magic happens. Ideal feedback requires us to do the heavy lifting. Instructors need to provide students with information about why it went wrong, what the correct concept actually is, and the exact right way to solve the problem. We have to point out the fundamental flaws in their understanding, highlight their typical mistakes, and—crucially—give them the specific resources they need to improve.

“Criticism may not be agreeable, but it is necessary. It fulfills the same function as pain in the human body. It calls attention to an unhealthy state of things.”
— Winston Churchill

Just writing “wrong” or “unclear” next to a complex problem is about as helpful as a dashboard light that simply says “Car Broken.” It doesn't help the student avoid repeating that specific mistake or correct their fundamental grasp of the concept.

The Two-Way Street of Feedback

Do instructors benefit from providing all this feedback? Yes, absolutely. It is a two-way street.

By taking the time to review their work closely, instructors learn so much about their students. We get a clear picture of their level of engagement both in and outside the class. We get to see exactly how they are approaching and solving problems step-by-step.

Most importantly, we identify the major bottlenecks. We get to see exactly where the breakdown happens when students try to transform the concepts they learned in class into actual, workable strategies for solving problems. This insight is pure gold—it tells us exactly where we need to adjust our own teaching.

Different Instruments, Different Tuning

Of course, the type of assessment instrument dictates the approach. Everything from quick short answers and multiple-choice questions to massive, topic-specific reports requires a different assessment strategy.

This is where precise assessment metrics and specific, rubric-based grading come in. When rubrics are clear and applied without ambiguity, they help students actually understand their evaluations rather than just staring blankly at a numerical grade.

Think of it like tuning a complex system: feedback fine-tunes learning. With enough optimal calibration of the tuning parameters—meaning the specific types and depths of feedback categories we use—we can ensure the true “signal” from the instructor successfully reaches the “receivers” (the brains of our students!). Good, deep feedback helps them filter out the static and noise of their own misunderstandings.

At the end of the day, feedback is the ultimate bridge. It connects the teacher-learner association, turning a one-way broadcast of information into a continuous, enhancing loop of instruction.

Use of Generative AI in refining my initial thoughts in this blog is acknowledged.