An official who led the American Folk Art Museum’s exhibition program for 25 years will step down from her post at the end of June, the museum said in a written statement on Tuesday.

The statement said that Stacy C. Hollander, the deputy director for curatorial affairs, chief curator and director of exhibitions, “is leaving the museum to pursue independent curatorial work and writing projects.”

Jason T. Busch, the museum’s director, said in the statement: “Stacy Hollander is a curator with deep knowledge and boundless curiosity; her exhibitions have been critical in establishing the American Folk Art Museum as the leading institution of self-taught art.”

Ms. Hollander said in a telephone interview on Wednesday that she had enjoyed her time at the museum, which she called a “wonderful, open and embracing” institution, and was looking forward to new projects.