Objective: Relate the time on screen, sedentary time and the level of school climate in times of pandemic in students between 11 and 14 years of the Valpara & iacute;so Region. Materials and method: Quantitative, descriptive-analytical and non-probabilistic study. The sample consisted of 179 students (104 females and 75 males) between 11 and 14 years of age from two educational establishments in the Valpara & iacute;so region of Chile. All the students had informed consent signed by their parents and/or guardians. To measure the level of school climate, the Classroom Social Climate Scale for students (CSA) was used and the use of technologies and sedentary time was analyzed with the YAP-SL questionnaire. Results: There was a negative relationship between the time of PC use with the school climate (r=-.213/p=0.004). On the other hand, sedentary habits were negatively related to school climate (r=0.239/p=0.001). In addition, time in video games (r=0.033/p=0.666) and mobile phone (r=-0.073/p=0.334) is not related, and TV time has a positive relationship with the competitiveness dimension (r=0.160/p=0.032). Conclusion: It is concluded that the social climate of the general classroom is negatively related to the time of PC use and sedentary habits. Based on this, it is suggested to increase the levels of physical activity and decrease the time of PC use during the pandemic to favor a better social climate in schoolchildren.