In line with the current situation caused by the Covid-19 pandemic, there was a need to organize classes in virtual classrooms, which are becoming a place of educational strategy. Teachers need to reconceptualize the fundamental issues of teaching, learning and assessment in non-traditional, virtual classrooms, and are faced with many problems of conducting and organizing the teaching process. The problem of evaluation is especially pronounced, partly due to doubts about the integrity of students, but also due to the actual evaluation process in the online environment. The aim of this research is to examine the incidence in Math classes in the virtual classroom – during exams, while doing homework and project work, with regard to the age and gender of students. The research showed a statistically significant difference on the scale of cheating in exams in Math organized online of female students in comparison to male students, establishing that female students cheat to a greater extent in online organized exams than male students. It was shown that there is no statistically significant difference in the prevalence of cheating of lower secondary school students in online organized exams compared to higher grade students.