Due Dates Provide a Structure for Spaced Learning

Every semester, a student hoping to “earn their desired grade” approaches me at the last minute, asking to make up all their missed assignments. I have a standard missed due date policy, 1) let me know (communication) and 2) get it done in a week (extended deadline). The students requesting to stockpile assignments at the end of the semester usually had not completed the assignment at all or had not completed the assignment even with an extended deadline. Basically, they hadn’t even tried to complete assignments.  It wasn’t like they had completed it at 12:01 am and it was due at 11:59 pm.  

That being said, I do wonder, Why not grant a student’s request to get it (the class) all done at once? You know the requests: “I know this already. Isn’t there a test I can take so I don’t have to sit through the class?” or “I am sure I can get all these assignments done before finals week.” It makes sense that if a student can pass all the assessments, they should pass the class.  So why not just complete all the assessments at the same time? 

Would these students who were absent from most of the class or hadn’t done any of the assignments on their due dates pass the class with a C or better?  Probably. So why enforce due dates at all.  Why shouldn’t a professor simply allow a student to complete all the assignments before final grades are due without regard to timing? 

The caveat in this “all at once” scenario is that a successful grade is wrongly associated with learning. If a student completes all the assignments in a few days during the semester, then assessments are the sole criteria used to define successful learning. However, the truth is that learning means much more than successfully navigating a certain percentage of the assignments. 

In my reality, most students could use their previous knowledge to muddle through the assessments of an introductory course at an accelerated pace. Let’s view the situation from the perspective of a student. They have after all been in school for the last 13 years and they have become really good at taking quizzes and exams and writing essays with thesis statements. My pre- and post-quiz data for the course reveals this. At the beginning of the semester without warning, I ask a group of anxious, ill-prepared students to (within a limited and unreasonable amount of time) answer 20 questions about a topic that they haven’t even considered before walking into the room. The questions are a sampling of the final exam. The average on the pre-quiz hovers at about 50%.  Given more time and a couple of days to study and contemplate, most of these students would pass the pre-quiz, and in essence, have the knowledge required to pass the final exam. 

Nevertheless, is completing all the assessments what defines learning the contents of a course? Should a student be allowed to stockpile all the assignments and get credit for them as long as they get them done before the final grades are due.  In my humble opinion, absolutely not, and it’s not for the classic soft skills reason. Of course, deadlines help students to navigate the world, (e.g. being responsible). After all, the professor is required to turn in final grades by a deadline. 

That said, to me, deadlines are important because people (not just students) learn best when information is spaced out or interleaved (Birnbaum et al., 2013; Samani and Pan, 2021). In order to retrieve something from memory, you need time to learn it. Retrieving information is when you know something without having to look it up—like your name and phone number or all the lyrics of your favorite song. This type of learning requires time—spaced learning. You need to learn it, forget it, be asked about it, refresh it, forget it, be asked about it, refresh it and then if you’re lucky you can retrieve it (Feng et al., 2019; Kobayashi, 2022).  This is considered spaced learning and is why deadlines are so important. 

Due dates provide the structure for spaced learning and learning that is more substantive. Much to the chagrin of the student who wants to “get it all done at once,” this isn’t the way to learn retrievable material. Retrieving information is what allows you to progress to the next set of information and then progress to creativity and eventually creation.  Assessments play a crucial role, but true learning doesn’t come from merely completing them. Instead, it happens through active participation in class, where students engage with the material and are consistently challenged by the professor to recall and apply previous lessons. 

As professors, we should enforce due dates to give students the time to learn content in a meaningful and retrievable way.  But maybe, just maybe, we can do it with a spoon full of sugar. 

Adriana J. LaGier is an American Cell Biologist, whose main area of research is active learning and mechanobiology. She is a professor of biology at Grand View University in Des Moines, Iowa, specializing in teaching undergraduate level general biology and cell biology courses.

References

Birnbaum, Monica S., Nate Kornell, Elizabeth Ligon Bjork, and Robert A. Bjork. 2013. “Why Interleaving Enhances Inductive Learning: The Roles of Discrimination and Retrieval.” Memory & Cognition 41 (3): 392–402. https://doi.org/10.3758/s13421-012-0272-7. 

Feng, Kanyin, Xiao Zhao, Jing Liu, Ying Cai, Zhifang Ye, Chuansheng Chen, and Gui Xue. 2019. “Spaced Learning Enhances Episodic Memory by Increasing Neural Pattern Similarity Across Repetitions.” The Journal of Neuroscience 39 (27): 5351–60. https://doi.org/10.1523/JNeurosci.2741-18.2019. 

Kobayashi, Keiichi. 2022. “The Retrieval Practice Hypothesis in Research on Learning by Teaching: Current Status and Challenges.” Frontiers in Psychology 13 (May):842668. https://doi.org/10.3389/fpsyg.2022.842668. 

Samani, Joshua, and Steven C. Pan. 2021. “Interleaved Practice Enhances Memory and Problem-Solving Ability in Undergraduate Physics.” NPJ Science of Learning 6 (November):32. https://doi.org/10.1038/s41539-021-00110-x.