With the project “Participation in School Councils: Quality and Sustainable Solutions”, we aimed to strengthen young people’s participation in the school environment and, above all, to initiate and establish the effective functioning of school councils in the Trnava Region, as at the time of the project’s preparation many school councils were either not functioning at all or existed only formally without real impact. Our intention was to create a stable and long-term sustainable space for developing knowledge, skills, and attitudes so that young people could actively engage in school life, advocate for students’ needs, cooperate with school management, and work in an inclusive and responsible way. The core of the project consisted of educational and discussion sessions focused on the practical functioning of school councils, participation, active citizenship, communication, teamwork, inclusion, and sustainability. Emphasis was placed on practical skills (active listening, negotiation, facilitation of discussions, decision-making, evaluation, and organisational and project-management skills) as well as on shaping attitudes (democratic citizenship, respect for different opinions, commitment to participation, and long-term responsibility). Main objective of the project: To support the establishment, stabilisation, and development of school councils at secondary schools in the region so that they have a real impact on the school environment and remain sustainable after the project ends. Specific objectives of the project were: 1/ to increase the educational level and competencies of school council members and school coordinators in the areas of non-formal education, participation, active citizenship, communication, teamwork, inclusion, and sustainability, 2/ to strengthen networking and cooperation among school councils, coordinators, and relevant stakeholders in the region in order to improve the exchange of experience, inter-school communication, and the development of joint solutions to recurring practical challenges, 3/ to connect learning with practice and strengthen project management skills—participants transferred newly gained knowledge into concrete school-based activities and learned how to plan, implement, and evaluate small participatory initiatives, 4/ to support inclusiveness and accessibility—selected parts of the programme were also delivered in Hungarian to ensure access and participation for the Hungarian minority. A methodological publication was not an output of our organisation; throughout the project we worked with existing support materials and outputs from partner/other organisations, which we made available to participants and distributed as inspiration for practical implementation. By achieving these objectives, we pursued our main intention: to increase the quality, sustainability, and real impact of young people’s participation through functional and competent school councils in the Trnava Region.