Purpose – The primary aim of this quantitative survey research is to explore the connection between environmental education, participation in environ-mental programs or actions, and the enhancement of pro-environmental attitudes and behaviors in individuals. In light of global challenges such as climate change, biodiversity loss, and environmental degradation, under-standing how education and active engagement can promote sustainability is increasingly crucial. This study aims to determine whether exposure to environmental education and participation in environmental actions can influence individuals’ environmental consciousness and encourage more sustainable practices. Design/Methodology/Approach – The study sample consisted of 2,687 Greek consumers, aged 18 to 29 years. This age group was specifically chosen to capture insights from young adults, who are key to future sustainability efforts. The Mann-Whitney non-parametric test was used to analyze potential differences in environmental awareness among participants who had received environmental education and those who had participated in environmental programs. The survey gathered responses related to specific actions, dailyhabits, and individual choices to assess the level of environmental consciousness among the participants. The research method focused on determining how environmental education and participation in programs impacted behaviors related to sustainability.Findings – The findings of this survey indicate that individuals who received environmental education in school are more likely to consider the environmental consequences of their purchasing decisions. Furthermore, those who have participated in environmental programs or actions were more inclined to adopt pro-environmental behaviors, such as reducing waste, conserving energy, and opting for sustainable products. Additionally, the analysis revealed that participants aged 26–29 demonstrated higher environmentalconsciousness than their younger counterparts aged 18–21, suggesting that environmental awareness increases with age and experience. Originality – This study contributes to the body of research on environmental education and sustainability by highlighting the significant role that both education and active participation in environmental initiatives play in fostering environmental awareness. It emphasizes the importance of these factors in encouraging sustainable behaviors and helping create a more sustainable andeco-conscious society. Design/Methodology/Approach – The sample involved 2,687 Greek consumers aged 18 to 29 years. The non-parametric Mann–Whitney test was used to explore possible differences in the environmental consciousness of the research participants in relation to whether they have been taught environmental education at school and/or they have participated in an environmental program or action in the past. The survey participants were asked to respond regarding the frequency of specific actions and daily habits, which frame their environmental consciousness and awareness. The questionnaire included behaviors such as recycling, reducing water and energy use, and choosing eco-friendly products. A multiple linear regression analysis was also conducted to assess the effect of age and other factors on environmental attitudes and actions. Findings – The results of this survey showed that the people who have been taught about environmental education at school are more likely to consider the environmental impact of the products they buy, while those who have participated in environmental programs or actions adopt more consistent pro-environmental behaviors. These include limiting single-use plastics and supporting sustainability-related initiatives. Furthermore, through the multiple linear regression analysis, it was found that the participants aged 26–29 have an increased environmental consciousness compared to the participants aged 18–21, possibly due to increased maturity, life experience, and exposure to sustainability-related information. Originality – This survey adds to the existing literature on environmental education and sustainability by highlighting the importance of environmental education and participation in environmental programs or actions towards increasing environmental consciousness and awareness and building a sustainable society. It underscores the necessity of incorporating structured environmental education within formal curricula and promoting active participation through community-based programs.