Our Impact

We Are TRANSFORMING Lives

Big Brothers Big Sisters of Calgary and Area helps young people reach their full potential by connecting them with a mentor. We do this in two ways—through community-based matches that meet outside of school hours, and through in-school mentoring during the school day. In both settings, children and youth build confidence, feel a stronger sense of belonging, and develop important life skills.
Image
Many young people in our communities are facing adversities that put them at risk of not reaching their full potential.
Image

Mentors form relationships with their mentees that develop their social-emotional learning and executive functioning skills.

Image

These critical Developmental Relationships help young people to become resilient, and give them the confidence to achieve more.

Snapshot of Our Impact

Last year, we supported 1,098
total matches

WHAT IS A MATCH?

A match is a mentoring relationship between a young person (a mentee) and a trained volunteer (a mentor). Each match is built on trust, consistency, and shared experiences. To learn WHO WE SERVE, scroll down!

Last year, we supported 1,626
CHILDREN AND YOUTH

Last year, we supported 1,063
VOLUNTEERS

The Big Impact Report

The Big Impact Report is our annual snapshot of how mentorship is changing lives in Calgary and Area. Backed by research and grounded in real relationships, this report shows the power of mentoring, one match at a time.

Read the 2026 Big Impact report
(opens in a new tab)

Looking fOR More than a snapshot?

For those who want to dive deeper into our impact, the Annual Performance Report provides a comprehensive look at the data behind mentorship. Explore detailed statistics, trends, and analysis below.

Read the 2025-2026 Annual Performance Report
(opens in a new tab)

How Do We Measure the Need for Mentorship?

Adverse Childhood Experiences, or ACEs, were developed by the U.S. Centers for Disease Control and Prevention and Kaiser Permanente to assess an individual’s exposure to toxic stress related to abuse, neglect, and household dysfunction during the first 18 years of life. In order to gain a better understanding of the children and youth we serve, and their families, we collect information at intake relating to socio-emotional competencies and ACEs, which act as a benchmark for where a child is and where they will go over the course of a Developmental Relationship. Although the questionnaire is not intended to be a diagnostic tool, research suggests that the higher the ACE score, the greater the risk for that individual to develop physical, social, and behavioural problems.

According to the Alberta Adverse Childhood Experiences Study done in 2013, children that suffer trauma, such as abuse, neglect, living in a home where there is violence, or having a parent who is mentally ill risk being twice as likely to have conditions like obesity, cardiovascular disease, addiction, and depression as adults. The study found that ACEs rarely occur in isolation:

Image
Having one ACE increases the probability of experiencing another one by 84%*
Image
Children who experienced more ACEs were more likely to be diagnosed with mental health conditions or substance dependence in adulthood*
Image
Children who experienced more ACEs were more likely to perceive their physical health, emotional health, and social support as poor*
* The Health of Canada’s Children and Youth, Distribution of the sample of Alberta adults ≥ 18 of age by the number of Adverse Childhood Experiences (ACEs) they have experienced, 2013.

Who We Serve

On average, the young people we serve are navigating five Adverse Childhood Experiences each...

Theory of Change

We remain deeply committed to our Theory of Change that was developed in 2018, and to the powerful outcomes it drives for young people...

Our Outcomes

Mentors create powerful developmental relationships. Relationships that help young people grow into their full potential...

Social Return on Investment

When it comes to hard dollar returns, few investments equal a donation to Big Brothers Big Sisters...

Accreditations

Image
Image

Charity Intelligence

Big Brothers Big Sisters of Calgary and Area is recognized as a Top 100 Charity in Canada by Charity Intelligence, with verified high social return on investment—demonstrating that every dollar invested in mentorship goes further in creating lasting change.
Image
Image

Impact Genome

Big Brothers Big Sisters of Calgary and Area is proud to be listed in the Impact Genome Registry for our evidence-based one-to-one mentoring programs and their measurable impact in the community.
Image
Image

TrecLab / University of Calgary

In partnership with TREC Lab and the University of Calgary, we are working to bridge the knowledge gap about the long-term impacts of mentoring relationships within the unique Canadian landscape.