RateMyProfessors.com allows college and university students to rate professors and campuses of American, Canadian, and United Kingdom institutions. The site includes 8,000+ schools, 1.7 million professors, and over 19 million ratings. Cheddar announced its acquisition of RMP from Viacom in 2018. RMP was founded by John Swapceinski, a software engineer from Menlo Park, California, in May 1999. It is the largest online destination for professor ratings.