Anatomy is the branch discipline focused on studying organisms' physical structures and parts. Although technological advances are broadening the anatomy study, the practices of prosection and dissection of human cadavers and animals remain a primary teaching method. Despite the large body of research supporting its benefits, in some countries, cadaveric prosection and dissection of vertebrate animals in secondary education have been banned. In the current study, to prevent a lack of access to anatomical sciences education, the use of plastinated biological specimens was proposed for teaching practical biology in middle and high schools. The study was conducted in the 2014 academic year. Eighty-seven middle school students participated in the experiment. Groups consisted of: (i) theoretical classes only; (ii) theoretical class plus prosection with fresh specimens class; (iii) theoretical class plus expository with plastinated specimens classes. A post-test grade method was used to assess the impact of such tasks on the learning experience of each group. An ANOVA test and multiple regression model were used to analyze the effects of the variables of interest. Our study highlighted that students who underwent the plastination practical class had higher overall performance and a higher mean post-test grade than those in the pure theoretical group. A favorable effect of a positive self-knowledge assessment on the students' performance was found, supporting the self-efficacy model of human behavior. Thus, the current study provides further evidence to support the use of plastinated specimens as an effective teaching method in countries where dissection is not feasible.