St. Mildred's-Lightbourn School, A Private All-Girls School, Oakville, ON

Girls Learn at SMLS, Then Lead Everywhere

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We know how girls learn.

We have a profound understanding of how girls learn, which is: Differently. The measure of our expertise is the bold mark our students will make on the world. As a student moves forward through her school years and beyond, she looks to SMLS as a source of pride and power, with gender never standing in her way.
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10

advanced placement courses offered each year
130+

years of experience in leading girls' education
1st

all-girls robotics team in canada
280+

Offers of Admission from Leading Universities for the Class of 2023
40+

athletics teams
5

unique signature programs
50+

clubs and councils
550

students across 3 divisions

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Our SMLS Values

At SMLS, we engage each girl in a personalized, real-world learning experience, where she explores her unique pathways in a nurturing community.

Experience Our School

List of 3 news stories.

Building Our Legacy: Investing in Every SMLS Girl
12/15/2025

For 135 years, SMLS has been a place where girls are known, supported, and encouraged to grow into confident women who challenge and transform the world. This strong community - and the exceptional experiences it provides - has always been made possible by those who believe in our mission. As we launched our Annual Giving Campaign, we invite you to be a part of our mission and help ensure that every SMLS girl continues to benefit from the opportunities, care, and excellence that define our school.

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The SMLS Advantage: Why Finding Her Voice in Middle School is Important
11/28/2025
At SMLS, the Middle School years are intentionally designed for transformation. They bridge childhood and adolescence, from dependence to agency, from guided learning to self-directed growth. Every component of our program supports girls in discovering who they are as learners, leaders, and global citizens.
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Beyond the Classroom: SMLS Grade 10s Dive into Global Citizenship and Self-Discovery
11/27/2025

The Global Citizenship Discovery Program at SMLS is an integral step on the Global Citizenship Pathway. The Grade 10 students experienced immersive learning opportunities in the Bahamas, Iceland and a local experience, each uniquely crafted to foster the development of essential personal characteristics connected to student success. Recognizing that learning is most effective when it is practical, cross-cultural, and collaborative, the program focuses on developing key educational goals, metacognitive skills, self-awareness, responsibility skills, and self-advocacy.

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Come Visit Us Take the Next Steps

Discover how your daughter will benefit from SMLS's superior academic program, our attention to each girl's social, emotional and physical wellbeing, and student leadership development - all designed for girls.

Angel N., Class of 2023

“Through SMLS’s unique opportunities available to students, I was able to join SWAT 77 [the school’s robotics team] in Grade 8. This allowed me to learn more about and pursue my interest in STEMR. I have also found ways to become involved in the school community with the numerous leadership opportunities offered to students.”
Bisma B., Class of 2008

“Once you become a Millie, you are welcomed into a family, a community, and a network with deep and loving traditions…When I was a new entrepreneur, this community supported me. It provided mentorship from other alumnae who had been in business long before me. This community provided me with a network that I could rely on and a foundation to help me thrive.”
Claire B. Class of 2013

“SMLS is a community which offers all girls life-changing experiences to grow, build self-confidence, and to thrive academically. I started as a student in kindergarten and stayed all the way through to the end of Grade 12. SMLS was a safe place for me growing up, where I could be my true self and where I was welcomed warmly by all staff.”
Eva L, Class of 2022

“As a Senior School student, I had designated advisor times when I could meet with advisor teachers and have individual, one-on-one conversations. This is how I learned firsthand that, whenever I need help, there would always be someone in the SMLS community who could give me guidance.”
Jessica M., Class of 2023

“As I enter into my final year of high school…I get to think back now and count all of the things I love about SMLS. Things like our small class sizes, which mean we get the help and academic attention we deserve. I have always found my teachers to be caring and supportive and I can approach them with any questions or issues I may have. All the teachers and faculty members are amazing and all have the same goal of making students more successful.”
Katie D., Class of 2025

"In my time at St. Mildred’s-Lightbourn School, I have had so many fantastic experiences. I never feel scared to share my voice in the classroom, and I love being surrounded by courageous and confident women. I am constantly pushed out of my comfort zone, and exposed to leadership and learning opportunities. Across my extracurricular activities, I have made connections with students across the grades, and have built strong relationships with many of my teachers.”
Melanie P., Class of 2018

"SMLS prepares students to succeed in their post-secondary experiences and life beyond the pillars, through academic challenges such as AP courses, support such as extra help lessons and, most importantly, talented and dedicated teachers and the peers who surround you. I feel excited for what the future holds.”
Miranda P., Class of 2003

"I was taught that my ideas and voice mattered. I was taught to care for myself and others, both at school and in my community. We practised the joy that comes from supporting and lifting up other women, and it was so easy and natural to do.”
Paisley H. Class of 2023

“The impact that SMLS has had on me is substantial. SMLS Has both amazing opportunities as well as excellent staff that have helped guide me towards achieving my goals.”
Sena Y., Class of 2022

“As students here, we are able to receive a world-class education, with teachers who support us, encourage us to grow and chase our dreams. We have literature resources, experiential learning, STEMR opportunities, arts programs and sports facilities all at the tip of our fingers.”
Sophia T., Class of 2024

"For thirteen years, SMLS has pushed me to explore my horizons, make new connections, and discover my place in the world as an ambitious young woman."