COSI also operates the largest outreach education program of any science museum in the United States through COSI in the Classroom, 21st Century Lab field trip experiences, international distance education Interactive Video Conferencing programs, and COSI On Wheels traveling outreach program. As well, COSI originated the Camp-In overnight program for Girl Scouts and Boy Scouts in 1972 – a concept that is now commonplace in museums nationwide. Since 1964, COSI has engaged with nearly 30 million unique visitors through on-site and outreach programs.