The Noval Coronavirus left a considerable negative impact on education worldwide in 2019. Therefore, different measures were implemented by governments to eliminate or minimize the risk of disease spreading. These measures included travel restrictions, mandatory quarantines for travelers, social distancing, bans on public gatherings, schools and universities closures, business closures, self-isolation, asking people to work remotely from home, curfews, and lockdown. Many universities and colleges worldwide suspended classroom teaching due to the outbreak of coronavirus pandemic, and switched to online teaching. Iraq was one of those countries that followed the lockdown rules and resorted to online education. The present cross-sectional study aimed to investigate the dentistry teaching staff as well as psychological health and educational status of students who experienced the lockdown last year in Iraqi colleges. The study participants were divided into two groups:the first group included a total of 1250 participants from 28 different colleges of dentistry (public and private), who answered the questionnaire with a response rate of 71.76%; the second group included a total of 776 students (474 females and 302 males) with a gender ratio of 1.6:1. The results showed that COVID-19 pandemic lockdown affected the academic performance of most participants (82.2%) with varying degrees. Overall, the mean evaluation score for online education was 31.3±6.9, while that for the practical subjects was 68.6%±6.9. Although online education providedthe students with an opportunity for self-study, it faced a serious challenge when offering the students the practical subjectsinmedical science. Since majority of the courses in medical science includedpractical subjects, the studentsexperienced real difficulties receiving online education. As the result, academic staff and students found it difficult to fulfill the medical science requirements adopting online education system alone.