Thirty-five-year old Heidi Kaeslin is on paid leave. She's accused of operating several for-profit websites using a school computer, most of them adult.
Students at Lincoln High in Stockton, where Kaeslin worked, can't believe it.
An investigation is underway to determine whether action should be taken against Kaeslin.
The policeman, who retired this year, has admitted his involvement in the adult sites.