former marlborough school student filed the lawsuit against joseph koetters , who taught english at the hancock park school which began in the 2000-2001 school year .
joseph koetters , a former english teacher at marlborough school in los angeles , is being sued by an unnamed 30-year-old former student who alleges that he sexually abused her .
he spent time working at pasadena 's polytechnic school and calabasas ' viewpoint school .