Ogden police say a 47-year-old Ogden High School teacher has had 'inappropriate relationships' with at least six female students over the years, but none of them rise to criminal conduct.

Lt. Scott Conley said Thursday that while the teacher's behavior is questionable under the school district's policy for professional conduct, his relationship with students is not criminal.

Conley said investigators found the teacher's "inappropriate relationships" dated back to 2000. He said the teacher used his influence to develop relationships with girls shortly before they turned 18.

After a reporter for the Standard Examiner in Ogden relayed the allegation earlier this month but did not reveal the source, police investigated allegations the teacher had been dating his current girlfriend since she was a minor and was living with her. The source reportedly claimed the teacher and student were dating when the student was 16 or 17 years old, Conley said.

Conley declined to discuss how the teacher was able to cultivate relationships with the girls, but said he used similar pick-up lines and took them to some of the same locations. He said he couldn't specify exactly what the teacher said to the girls or where he took them.

The cases "mirrored each other to where there were the same comments being made" to each girl the teacher pursued, Conley said.

Ogden School District spokeswoman Donna Corby said the district received similar

information in an inquiry from the reporter. She said Thursday the district hopes to complete its investigation next week.

The teacher, who has taught at the school for 14 years, has been put on paid administrative leave pending completion of the investigation, Corby said. Neither Corby nor Conley would disclose the subject the teacher instructs, and the man's name has not been released.

Conley said the teacher coaches an extracurricular activity at the school, and that he was surprised to uncover how many girls the teacher had forged inappropriate relationships -- without anyone passing on allegations to the police department before this year. People interviewed during the investigation agreed to do so because they were promised anonymity, he said.

Some girls reported being ridiculed by classmates during high school because of their relationship with the teacher, Conley said.

"They didn't have a normal school experience because of the relationship," Conley said. "They'd be taunted and teased by others ... It has affected more than just the student and teacher themselves. It also goes into the families. It has carried on and caused a lot of pain."