[The program was officially opened by the Principal of SMA Negeri 1 Pati, who welcomed all participants and highlighted the importance of continuous professional development for teachers in improving students’ achievements in academic competitions, particularly the National Science Olympiad in Chemistry.]

Harjito, S.Pd., M.Sc., led a comprehensive Training of Trainers (ToT) program designed to enhance the competencies of chemistry teachers in preparing students for the National Science Olympiad (Olimpiade Sains Nasional/OSN). The program gathered chemistry teachers from across Pati Regency and was held at SMA Negeri 1 Pati, one of the leading senior high schools in the region. This initiative reflects a growing commitment to strengthening academic excellence and fostering competitive scientific skills among high school students.

The training was conducted over two days, starting on April 14, 2026, and covered a wide range of advanced chemistry topics aligned with the OSN syllabus. Participants engaged in intensive sessions that explored key areas such as physical chemistry, organic chemistry, and analytical problem-solving. The program not only emphasized mastery of theoretical concepts but also introduced strategic approaches to tackling high-level Olympiad questions, which often require critical thinking and multi-step reasoning.

Throughout the sessions, Harjito emphasized the importance of a structured mentoring approach in guiding students toward success in competitions. He shared proven techniques for breaking down complex problems, identifying patterns in Olympiad questions, and building students’ confidence in handling unfamiliar challenges. In addition, participants were actively involved in discussions, collaborative problem-solving activities, and simulations of Olympiad-style questions, allowing them to experience the learning process from a student’s perspective.

The interactive nature of the training encouraged teachers to exchange ideas, share teaching experiences, and reflect on current practices in their respective schools. Many participants found the hands-on exercises particularly valuable, as they provided practical insights into how to effectively train students with varying levels of ability. The collaborative environment also fostered a sense of professional community among chemistry teachers in the region.

[The program concluded with a group photo session featuring the participating teachers, marking the end of the training and capturing a moment of collaboration and shared commitment to advancing chemistry education in Pati Regency.]

At the end of the program, participants expressed their appreciation for the depth, clarity, and applicability of the material presented. They highlighted that the training not only improved their subject knowledge but also equipped them with concrete strategies to mentor students more effectively in preparation for the OSN. The support and enthusiasm demonstrated throughout the sessions contributed to a highly productive and engaging learning atmosphere.

It is expected that this Training of Trainers program will have a lasting impact on the quality of chemistry education in Pati Regency. By empowering teachers with advanced knowledge and effective coaching techniques, the initiative aims to enhance students’ performance in future National Science Olympiad competitions. Ultimately, programs like this play a crucial role in nurturing young scientific talent and promoting a culture of academic excellence in Indonesia.