Before introducing the exhibition board, the headmaster usually makes a speech and gives an opening speech to the visitors. The following are some of the contents included in the opening remarks of the principal before introducing the exhibition board:

Welcome speech: The headmaster may extend a warm welcome to the visitors and thank them for coming and paying attention to the school activities.

2. Introduce the background: The headmaster can briefly introduce the theme, purpose and background of the exhibition board. This can help visitors better understand the significance and value of the exhibition board.

3. Objectives and significance: The headmaster can emphasize the objectives and significance of the exhibition board and its connection with school education, academic research or community development. This helps to stimulate the interest of visitors and realize the importance of exhibition boards.

4. Highlights of the exhibition board: The headmaster can briefly introduce the highlights and key contents of the exhibition board to attract the attention of visitors and stimulate them to further explore and understand the exhibition board.

5. Thanks and encouragement: The headmaster may thank teachers, students, volunteers or partners who have contributed to the exhibition board, and encourage visitors to actively participate and interact, ask questions or share opinions.

6. Conclusion and expectation: The headmaster may summarize the speech and express his expectation for the exhibition board, hoping that visitors can get valuable information and inspiration from it and be proud of the school's efforts and achievements. It should be noted that for different schools, activities or occasions, the specific content of the opening remarks of the principal before introducing the exhibition board may be different. The headmaster may make appropriate adjustments and personalized speeches according to the actual situation.