In 1968 Telesecundaria started at 304 classrooms and a teacher for each one of these in the states of Veracruz, Morelos, Estado de México, Puebla, Tlaxcala, Hidalgo, Oaxaca and the Federal District.
In 1994, Edusat was launched, making use of the more powerful and advanced satellite, (Solidaridad 1) capable of transmitting 24 hours a day and covering more areas.
Telesecundaria broadcasts more than 4,000 television programs on channel 11 of the six channels of Edusat (Sistema de Televisión Educativa, "Educational Television System") of the Ministry of Public Education (SEP, Secretaría de Educación Pública) of Mexico to more than 16,000 rural facilities serving more than one million students nationwide.
In 1996, the head of the SEP and the ministers of Education of Central America agreed to start experimental projects of Telesecundarias for every country.
Since this year, the following countries in Central America are served by Telesecundaria: There are currently pilot programs available in the states of California, Colorado, Pennsylvania, Oregon and Florida.