Digital education is a recently highlighted challenge for educational innovation. This study aimed to discover the educational conditions in which teachers and students may be involved during the pandemic, and how these may affect teachers’ workload and educational quality. A Mixed Methods Design was used, where quantitative and qualitative data were obtained and analyzed. An ad hoc questionnaire was created and sent to teachers of different levels of education (pre-university) and types of school (public and private). Predictive variables of working hours were analyzed by carrying out a multiple regression. Moreover, changes experienced by teachers were studied by analyzing qualitative data. The variables type of teaching, students’ access to electronic resources, and instant training in online teaching predicted teachers’ working hours. Furthermore, participants cited having changes in workload and being overwhelmed during this period, having less contact with students, and experiencing changes in working environment as the most important variables affecting the new working conditions. In conclusion, teachers’ training in online education and the provision of electronic resources for students should be a priority to make online learning possible, to avoid the problem of teachers needing to perform extra work in similar future conditions, and to foster educational innovation.