The Thames Valley District School Board (TVDSB; known as English-language Public District School Board No. 11 prior to 1999) is a public school board in southwestern Ontario. It was created on January 1, 1998 by the amalgamation of the Elgin County Board of Education, The Board of Education for the City of London, Middlesex County Board of Education, and Oxford County Board of Education.The TVDSB serves an area over 7,000 square kilometres which includes urban, suburban and rural communities.