School officials are investigating teacher Heidi Kaeslin for allegedly running several porn sites, including mysluttyteacher.com, from a school-issued laptop.
It has also been claimed that Kaeslin's partner in the enterprise is a retired police officer called Richard Fields, who was assigned to the school as a resource officer.
The accusations have been made by the teacher's estranged husband, who said the domain names of the porn sites were registered to Kaeslin's home in Stockton, California.
Pictures of Kaeslin have emerged showing her wearing various t-shirts branded with the slogan "I heart teachers" but as one news presenter commented: "The Lincoln High School is not feeling the love for the t-shirts' designer".
One student of the school called the incident "kind of disgusting", although they seemed to know the site's content in detail:
"The website said 'Have you ever dreamed about your teacher's breasts before? Well now you can see them' or something like that..."
The 35-year-old has been put on paid leave until the matter is resolved. The school board will meet next month to decide whether Kaeslin has violated teacher conduct codes and if she will be able to keep her job.