In 2010, Mendler became ambassador to First Book, a campaign to encourage reading and gives books to children in need.
In 2011 it became part of Disney's Friends for Change, a pro-social "green" initiative of charity for environmental issues encouraging fans to take action.
As campaign theme that year Mendler released a promotional single on June 11, "We Can Change the World", raising $250,000 for the Disney Worldwide Conservation Fund.
She also participated of the Disney's Friends for Change Games, an Olympic-based televised games aired on the Disney Channel, getting $125,000 donation to UNICEF as Yellow Team captain and also competing for $100,000.
But her team lost to the World Wide Fund for Nature.
In 2012 Mendler won the honorary award Common Sense Media as Role Model of the Year for her work against bullying.
Mendler was the third young artist to win the award, which usually honors environmentalists and scholars.
She also attended the annual UNICEF acoustic concert in New York to raise donations for charity in January 2013.
In July 2012 Mendler became ambassador of the campaign Give With Target with Target Corporation to raise funds to reform schools in the United States.
The campaign aims to get $1 billion by 2015.
To start the Target campaign, they invested $5 million and distributed $25,000 grants to 100 in-need schools for the school year.
Mendler said about the incentive: “I’m excited to partner with Target on their Give With Target campaign and celebrate the start of a new school year with kids across the country.
It's so important for all kids to have everything they need for a successful school year”.
In August she got $5 million donated by The Walt Disney Company and more $2 million donated by people at Facebook.

She was featured in a March 2013 public campaign Delete Digital Drama with the Seventeen Magazine to end cyberbullying.
About the campaign she said "Being bullied is something I experienced in school and it is not fun...I love working to end cyberbullying.
People don't have to push back as much as they would in real life.
People need to realize bullying has just as much of an impact online because words are so cutting and difficult to deal with".
She also worked with Acuvue being a mentor to help Katie, a winner of the 2013 Acuvue 1-Day Contest, get closer to her dream of making a difference.
On October 8 Mendler hosted the event We Day of Free The Children Foundation, a campaign that helps build schools for underprivileged children of Canadian and American cities.
Also for Free The Children Foundation she was godmother of We Create a Change to help needy children.

On November 16, 2013, Mendler participated of the World Challenge Marathon for Save the Children Foundation, a charity race to helps children with health problems.
In March 2014, Mendler traveled to region of El Quiché, Guatemala to participate in the other project of Save the Children that helps underprivileged children in developing countries.
On April 8, she released the Baby Sit In, that asks for teens to help give parents a break and give babies a healthy start to their life.
Mendler said "It’s an easy way for kids to help little ones everywhere get a healthy start and an opportunity to learn just by doing something they do most weekends anyway".
Mendler represented the institution during the charity congress Save the Children's annual Advocacy Summit in Washington, D.C.. Carolyn Miles, the Save the Children's president, thanked Mendler publicly for humanitarian work: "We are thrilled to have Bridgit on board.
Her passion for helping children truly came through when she met with families and kids during her visits to the remote communities in the deserts of California and Guatemala's western highlands".
In 2010, Mendler became ambassador to First Book, a campaign to encourage reading and gives books to children in need. In 2011 it became part of Disney's Friends for Change, a pro-social "green" initiative of charity for environmental issues encouraging fans to take action. As campaign theme that year Mendler released a promotional single on June 11, "We Can Change the World", raising $250,000 for the Disney Worldwide Conservation Fund. She also participated of the Disney's Friends for Change Games, an Olympic-based televised games aired on the Disney Channel, getting $125,000 donation to UNICEF as Yellow Team captain and also competing for $100,000. But her team lost to the World Wide Fund for Nature. In 2012 Mendler won the honorary award Common Sense Media as Role Model of the Year for her work against bullying. Mendler was the third young artist to win the award, which usually honors environmentalists and scholars. She also attended the annual UNICEF acoustic concert in New York to raise donations for charity in January 2013. In July 2012 Mendler became ambassador of the campaign Give With Target with Target Corporation to raise funds to reform schools in the United States. The campaign aims to get $1 billion by 2015. To start the Target campaign, they invested $5 million and distributed $25,000 grants to 100 in-need schools for the school year. Mendler said about the incentive: “I’m excited to partner with Target on their Give With Target campaign and celebrate the start of a new school year with kids across the country. It's so important for all kids to have everything they need for a successful school year”. In August she got $5 million donated by The Walt Disney Company and more $2 million donated by people at Facebook.
She was featured in a March 2013 public campaign Delete Digital Drama with the Seventeen Magazine to end cyberbullying. About the campaign she said "Being bullied is something I experienced in school and it is not fun...I love working to end cyberbullying. People don't have to push back as much as they would in real life. People need to realize bullying has just as much of an impact online because words are so cutting and difficult to deal with". She also worked with Acuvue being a mentor to help Katie, a winner of the 2013 Acuvue 1-Day Contest, get closer to her dream of making a difference. On October 8 Mendler hosted the event We Day of Free The Children Foundation, a campaign that helps build schools for underprivileged children of Canadian and American cities. Also for Free The Children Foundation she was godmother of We Create a Change to help needy children.
On November 16, 2013, Mendler participated of the World Challenge Marathon for Save the Children Foundation, a charity race to helps children with health problems. In March 2014, Mendler traveled to region of El Quiché, Guatemala to participate in the other project of Save the Children that helps underprivileged children in developing countries. On April 8, she released the Baby Sit In, that asks for teens to help give parents a break and give babies a healthy start to their life. Mendler said "It’s an easy way for kids to help little ones everywhere get a healthy start and an opportunity to learn just by doing something they do most weekends anyway". Mendler represented the institution during the charity congress Save the Children's annual Advocacy Summit in Washington, D.C.. Carolyn Miles, the Save the Children's president, thanked Mendler publicly for humanitarian work: "We are thrilled to have Bridgit on board. Her passion for helping children truly came through when she met with families and kids during her visits to the remote communities in the deserts of California and Guatemala's western highlands".
Bridgit Mendler