Ministry of Education recommends avoiding the use of social networks for communication between teachers and students
Ecuadornews:

The use of technology in the classroom is common nowadays, since it serves to complement the knowledge of the students.
In the classes, the digital has a weight. But the use of social networks as a means of communication between students and teachers is not allowed.
Thus detailed the Ministry of Education in an email, through which he responded to this Journal. Through it was explained that it does not advise the use of social networks such as Facebook, Twitter, Instagram, WhatsApp and others, for teachers and students to communicate.
“Being of free use can bring negative consequences for students. It is recommended that school assignments be planned and socialized in class, so as to avoid using this type of social networks for this purpose” however, the use of other tools and platforms can enrich the classes.
For example, in the area of Language and Literature, the use of digital media is encouraged to strengthen oral and written communication, consultation of databases, among other resources. Here the role of the teacher is fundamental, since it helps to discern the type of information.
It is also taught to “… assess the reliability of the chosen sources and the respective appointment to encourage academic honesty among the students, among other knowledge”. As of August 2018, there have been 27 reports of physical contact with sexual purpose against minors under 18 years of age via electronic means.
The national data were provided by the Gender Violence Unit of the Office of the Prosecutor of Guayas. Additionally, the Council of the Judiciary indicated that 63 sentences were issued for this cause in the last three years.
This crime known sexual harassment via Internet is typified in the Organic Comprehensive Criminal Code (COIP). The penalty is one to five years in prison. (I)
Source: https://www.elcomercio.com/actualidad/educacion-redes-sociales-profesores-alumnos.html