CBTIS (Centro e Bachillerato Tecnologico Industrial y de Servicios), English: (center of industrial and services technological baccalaureate). CBTIS is a chain of High Schools (In Mexico known as "Preparatoria") in the 31 States and the D.F. of Mexico. It counts with more than 8,000 establishments of CBTIS in all the country and private schools associated with CBTIS. This school is associate with the universities DGETI, UNISON, ITH, ITESM and others. Also it is a technical school.