Lauren said she took the photo and sent it to her boyfriend at the time, who was also a teacher in the South Country School District in Bellport, but that at no time was it ever posted online.
Miranda said when school officials found out about the photo, they first put her on administrative leave for three months in January, then fired her from her teaching position of four years last week.
Her attorney, John Ray, told WABC-TV that the school district is discriminating against Miranda for being a woman.
"Anytime a man has ever exposed his chest, no one has ever commented or had any problem with it whatsoever," he said. "But when a woman displays her chest, as happened here, she gets fired from her job."
Miranda has filed a $3 million lawsuit against the district.