Some major CTSOs include:
Business Professionals of America (BPA) is a career and technical student organization that is headquartered in Columbus, Ohio. BPA aims to develop leadership, academic, and technological skills in the workplace among students and leaders within the community. BPA's colors are navy blue, tan, and red.
Official Website: http://www.bpa.org
Official Website: http://www.deca.org
SkillsUSA is a United States career and technical student organization serving more than 307,000 high school and college students and professional members enrolled in training programs in technical, skilled, and service occupations, including health occupations.
Official Website: http://www.skillsusa.org
Official Website: http://www.tsaweb.org
Health Occupations Students of America (HOSA) is a national career and technical student organization endorsed by the U.S. Department of Education and the Health Science Technology Education Division of ACTE. HOSA is composed of secondary and postsecondary students. It is headquartered in Flower Mound, Texas. HOSA is the largest student organization that prepares students to enter the health care field.
Official National Website: http://www.hosa.org
Career and technical student organization - http://en.wikipedia.org/wiki/Career_and_technical_student_organization