Teaching / Working in the US Or Canada

America and Canada have a lot to offer. It is possible to teach there even if you don't have a US or Canadian passport. There are many immigrants and they have become a melting pot of cultures around the world. Some of the info below was taken from Susan Griffith's Teaching English Abroad.  You might also want to take a look at Teaching at International Schools and Teaching Exchanges and Fellowships.
United States
The US offers an Exchange Visitors Programme and provides successful applicants with J-1 visas. Here are just a few programmes that offer this.

• AMIDEAST has scholarship and exchange programmes.
• Amity has an intern and teacher programme.
• BUNAC gets work visas for its participants.
• DECS places teachers in the US.
• EPI places teachers in K-12 schools.
• Humphrey Fellowship offers mid-career professionals 10 months of work and study.
• ITES places teachers in K-12 schools.
• LASPAU has research and scholarship programmes.
• NCUSCR offers exchanges between the US and China.
• The US State Department has a list of more exchange programmes as well.
• VIF places teachers in K-12 schools.
• World Class Schools places UK teachers in US schools.

Canada

• BUNAC gets work visas for its participants.
• CEEF places teachers in Canada and has exchanges for Candian teachers to go to other countries.
• DECS places teachers in Canada.
• LECT offers exchanges between Canada and Australia.

International Schools Jobs

• Look at teaching at international schools for more info.

Short-term and Working Holiday Visas

• You can find more information in short-term jobs and working holida visas.

Volunteer

• You can find more info in Volunteer Opportunities for Teachers.

World

• You can find more info in Worldwide Opportunities for Teachers.