PORTLAND — Stan Davis, a nationally known expert on strategies to prevent bullying, will give a free public presentation at 6:30 p.m. Wednesday at Hall Elementary School, 23 Orono Road, off outer Brighton Avenue.

His talk is entitled “Empowering Bystanders: Strategies Parents Can Use in Guiding Their Children.”

Davis, who lives in Wayne, is the author of “Schools Where Everyone Belongs: Practical Strategies in Reducing Bullying” and “Empowering Bystanders in Bullying Prevention.”

This is the third year in a row that he will visit Hall as part of the schoolwide Peaceful Hall initiative to sustain a welcoming, inclusive and responsive school culture.

Davis will spend the school day working with Hall students and staff on how to empower bystanders to act in the face of conflict.

He will work with a team of Hall students to demonstrate problem-solving skills and other effective strategies to prevent bullying, using an interactive playback theater approach.

After school, Davis will conduct a workshop for all Hall staff on empowering and responding to bystanders effectively.

The Hall School Parent Teacher Organization provided the funding for Davis’ visit. For more information, call 874-8205.