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

We Know How Girls Learn

Book a Private Tour or Discovery Call

We Know How Girls Learn

Book a Private Tour or Discovery Call

Fall Open Houses

Join us to discover how girls flourish in a school designed specifically for them. You will hear from school leadership, a student panel, tour the campus with Student Ambassadors, connect with Principals and the Admissions Team to learn more about the SMLS experience and enrolment process.

Saturday, October 24, | 10:00 am - 2:00 pm (OIS Open House)
Tuesday, October 27 | 9:00 -11:00 am
Register Now!

Where girls thrive.

"I am amazed at the impact that SMLS has had on our daughter.

I think this is the first time she felt 'seen' by her educators, and as a result, she is actually seeing herself, and her possibilities, more clearly than ever.”
- Middle School parent

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135+

years of experience in leading girls' education
1st

all-girls robotics team in canada
260+

Offers of Admission from Leading Universities for the Class of 2026
40+

athletics teams
5

unique signature programs
50+

clubs and councils
510+

students across 3 divisions
9

advanced placement courses offered each year

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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.

Beyond Borders at the Round Square International Conference
10/20/2026

This year, eight of our Senior School students embarked on an extraordinary journey to Australia for the Round Square International Conference (RSIC). Centered around the theme "Visions of the Future from an Ancient Land," the experience combined environmental discovery, service, cultural exchange, and global networking.
From exploring ancient rainforests and swimming in the Great Barrier Reef to hands-on service projects and hearing from world-class keynote speakers, our students represented our school community with curiosity, resilience, and heart.

Here is a look at their journey, straight from their daily journal entries and reflections.

Read More
Building Leaders Through Athletics at SMLS
9/30/2026

Athletics serve as a powerful training ground for leadership, helping students discover that true leadership isn't about holding a title. It is about empathy, accountability, and inspiring those around them. From their very first team practice to their final season as seniors, student-athletes build confidence and character through every win, challenge, and shared effort.

Read More
Inside the Grade 11 Professional Internship Experience
6/29/2026

Earlier this month, our incredible Grade 11 students officially wrapped up their 4-week Professional Internship Signature Program! From healthcare and architecture to tech, politics, and the arts, our students stepped out of the classroom and directly into specialized industries across our community.

Read More

Read More News

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."