Data underlying the research of social perception and well-being of students at the Faculty of Engineering from Sibiu, Romania Authors: M.L. Bratu, L.I.Cioca Department of Industrial Engineering and Management, Faculty of Engineering, Lucian Blaga University of Sibiu, 550024 Sibiu, Romania Corresponding author: M.L. Bratu Contact Information: laura.bratu@ulbsibiu.ro General Introduction This data set includes the data collected during a scientific research carried out at the Lucian Blaga University of Sibiu, during the first lock down caused by the Covid-19 pandemic. The research project was made possible by a grant from the Lucian Blaga University of Sibiu & Hasso Plattner Foundation, research grants LBUS-IRG-2019-05. Purpose of the test campaign The aim of the research was to identify the relationship between the well-being of students and the feedback provided on teaching. The measurements were performed before and after the first lock down caused by the Covid-19 pandemic. Methodological information Warwick Edinburgh Mental Well-being Scale (WEMWBS) was used to assess students' well-being.The data were interpreted using IBM SPSS Statistics v23. The feedback provided by the students was done using the SKS method: stop (S), keep (K), and start (S) [58]. Philip Daniels, a professor at Brigham Young University, found the following questions great for asking feedback from others [58]: 1.What else should I give up? 2.What should I continue to do? 3.What should I start doing? All data obtained with the SKS method were analyzed on clusters.