Sex education is a controversial topic on the Chinese mainland and many schools avoid the issue completely.
The woman was not employed as a teacher but was a member of staff.
School spokeswoman Amity Chandler would not comment.
A note to parents from the principal said students were disciplined "quickly."South Fort Myers High has about 2,000 students.
The series had been strictly reviewed before its release in 2010, the reportquoted the publisher as saying.
The series’ author, Liu Wenli, said that while Chinese people traditionally believed that sex should not be taught in school, it was a “must-learn” subject in life, the report said.