As the evacuation problem has attracted and continues to attract a series of researchers due to its high importance both for saving human lives and for reducing the material losses in such situations, the present paper analyses whether the evacuation doors configuration in the case of classrooms and lecture halls matters in reducing the evacuation time. For this aim, eighteen possible doors configurations have been considered along with five possible placements of desks and chairs. The doors configurations have been divided into symmetrical and asymmetrical clusters based on the two doors positions within the room. An agent-based model has been created in NetLogo which allows a fast configuration of the classrooms and lecture halls in terms of size, number of desks and chairs, desks and chair configuration, exits' size, the presence of fallen objects, type of evacuees and their speed. The model has been used for performing and analyzing various scenarios. Based on these results, it has been observed that, in most cases, the symmetrical doors configurations provide good/optimal results, while only some of the asymmetrical doors configurations provide comparable/better results. The model is configurable and can be used in various scenarios.Symmetry 2020, 12, 627 2 of 25 demonstrated the beneficial effect of such an obstacle, a series of other studies have followed [28], some of them revealing a smaller positive effect [29,30], others stating the influence based on the dimension and position of the obstacle [31], while others proving the ineffectiveness of such a situation [32,33]. In a recent paper, Zuriguel et al. [34] studied the effect of an obstacle placed in front of the exit, and the authors concluded that this situation slightly favors the evacuation of the persons near the wall, prompting a debate on the role of the column in an evacuation process. Even more, the role of the exit location is questioned in Wu et al. [3], in which the authors conduct an experiment using mice and changing the position of the exit door by moving it from the long to the short wall of the test container.Depending on the type of the environment in which the evacuation might take place, a series of studies in the literature have addressed the evacuation of ships [35], metro stations [11,36], metro trains and high-speed trains [37,38], hospitals [39,40], stadiums [41], concert halls [42], supermarkets [43], rooms [34,44], auditorium [45], classrooms and lecture halls [18,46,47], ascending stair evacuation [48], large indoor building spaces [49], large buildings [50], large exterior spaces [51], etc.Among the public building evacuation situations, classrooms and the lecture halls hold an important place, as these spaces generally present a high population density and a restrained evacuation capacity [18,52]. The seat and desk placement among these types of learning rooms can take various forms, which, combined with the exit doors' positions, can have an impact on the overall evacuation time [53]. Furthermore, the complexity of the i...