Margaret Giesler, a sixth-grade student at St. Theresa Middle, won first place at the international level of the Knights of Columbus Substance Abuse Awareness Poster Contest.

She picked up her prize in the 8- to 11-year-old drug awareness and abuse poster category.

Giesler won first place in Louisiana in her division to qualify for the international level.

More than 25,000 entries were part of the worldwide contest.