Why Sleep is the Secret to Smarter Learning – Jennifer Oaten
We all know that sleep is important. At Santa Maria College, we talk about it often because the science is clear and because we see the impact of poor sleep on our students every day. I have shared tips for better sleep, explored how screens can disrupt it, and explained why teenagers need more of it. But today, I want to take that conversation a step further.
I recently heard some powerful insights from cognitive neuroscientist Dr Mark Williams at the recent AMSSA conference, and his research reinforces what we have long believed at Santa Maria: If you want to remember what you have learned, sleep is not optional; it is essential.
If you are interested in more sleep-related advice, you might like to explore our previous articles:
The Science of Remembering
According to Dr Williams, memory relies on two key processes: encoding, which happens while we are awake and paying attention, and consolidation, which largely happens while we sleep.
Throughout the day, students absorb enormous amounts of information. But it is during deep sleep that the brain organises and files this information into long-term memory. Without sleep, the brain struggles to lock in new learning. This means that staying up late and cramming might feel productive, but it can actually erase much of what was learned.
As Dr Williams puts it, “No sleep, no memory.”
What This Means for Learning
This has real implications for our students. When teenagers go to bed too late or scroll through their phones until the early hours, they are not just tired the next day; they are missing out on one of the most powerful learning tools available to them.
Without quality sleep, students experience:
- Difficulty concentrating and processing new information
- Reduced memory recall and poor academic performance
- Heightened anxiety and emotional reactivity
- Greater risk of physical fatigue and illness
By contrast, regular, high-quality sleep enhances memory, focus, and emotional regulation. It sets students up to succeed, not just academically, but in all areas of their lives.
The Brain’s Ability to Change, For Better or Worse
Another key concept Dr Williams explores is neuroplasticity, the brain’s ability to change and rewire itself in response to our actions and habits.
This is great news. It means that with healthy sleep routines, focused study habits, and reduced digital distractions, our students can literally train their brains to become better learners. But neuroplasticity works both ways. If teens repeatedly stay up late, multitask, or rely heavily on screens, their brains adapt to those patterns too, sometimes to the detriment of memory, attention, and emotional balance.
In other words, what we do each day matters. The brain is always watching, learning, and adapting.
A Balanced Approach
Helping our girls thrive does not mean chasing perfection. It means establishing habits that support their wellbeing, consistently and compassionately. Here are some small but powerful ways families can help:
- Set a regular bedtime and wake-up time, even on weekends
- Encourage screen-free wind-down routines (reading, journaling, music)
- Charge devices outside the bedroom
- Use sleep apps like Calm or BetterSleep to support relaxation
- Talk about the link between sleep, memory, and learning
- Use time management tools like the Pomodoro Technique to reduce late-night cramming
- Create distraction-free study environments with apps like Forest or StayFocusd
When teenagers understand why these habits matter and when they feel supported, they are more likely to make positive changes themselves.
How Parents Can Support Better Sleep and Study Habits
Supporting teenagers with sleep and study does not mean controlling every aspect of their routine, it means creating the conditions for success. Here are a few extra ways parents can make a difference:
- Model good habits by prioritising your own sleep and reducing screen time at night
- Encourage open conversations about how sleep affects mood, motivation, and learning
- Set household norms like a nightly wind-down time or tech-free zones
- Check in gently – ask how your daughter is feeling in the mornings, not just how she slept
- Celebrate small wins, like going to bed on time or getting through a focused study block
- Keep a calm tone when offering reminders or boundaries around screen use and bedtime
Remember, teens respond better to support than strict rules. A partnership approach builds trust and motivation.
“Sleep is not optional; it is essential for learning, wellbeing, and helping our girls thrive in all areas of life.”
A Foundation for Success
We believe that academic success is not just about studying harder. It is about being well, mentally, physically, and emotionally. Sleep, screens, and study all play a role in this balance.
By giving our girls the tools to manage their routines and the knowledge to understand how their brains work, we empower them to thrive, not just in school, but for life.
Let us make sleep a priority, not just for rest, but for learning, for wellbeing, and for the bright futures our girls are building every day.
Perhaps tonight is a good night to start a new routine.
- Academic Success Tips, Featured, Holistic Education, Jennifer Oaten, Neuroscience in Education, Sleep and Learning, Student Wellbeing, Study Habits for Teens, Teen Sleep Habits
Author: Santa Maria College
Santa Maria College is a vibrant girls school with a growing local presence and reputation. Our Mission is to educate young Mercy women who act with courage and compassion to enrich our world. Santa Maria College is located in Attadale in Western Australia, 16 km from the Perth CBD. We offer a Catholic education for girls in Years 5 – 12 and have 1300 students, including 152 boarders.
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