The available local materials are the largest variance between domestic and international wood furniture programs. Certain materials and types of wood are common in most parts of the world. Others are not. Woodworkers prefer to use local materials because they are cheaper and readily available. Often, this means the design and construction must change to suit the wood.
The cost of the school is also a large differentiator. North Americans pay the most for education, many other countries offer free and subsidized programs for students. The cost of a program in New York would be significantly higher than a similar class in India. The programs may be similar, but the cost may be quite different.
The length and type of course will likely vary as well. Some schools offer short, week-long programs. Others offer several-year college degrees. Some courses concentrate only on the study of the furniture from a theoretical and historical point of view. Others are very practical and offer hands on experiencing making wooden furniture. Still others offer both elements.
The local culture will also influence the type of study. Some cultures value pragmatic learning, others more abstract styles. The student-teacher relationship will also be different, as will school culture. Some places may have a very supportive and united student body, others will be fiercely competitive.