PHOENIX — An Arizona State University student who was teaching math at Tempe High School has pleaded guilty to three counts of attempt to commit sexual conduct with a minor.
Maricopa County prosecutors say 26-year-old Joel Calderon had a change of plea hearing Thursday.
He previously pleaded not guilty to charges of sexual conduct with a minor.
His sentencing is scheduled for Dec. 5.
Tempe police arrested Calderon late last year after learning about a possible relationship between him and a female student at Tempe High.
Police were initially contacted by school administrators.
They say Calderon admitted to the inappropriate relationship with the 16-year-old student during an interview.
Court documents say the alleged instances of sexual contact occurred in early November 2013 and Calderon was fired from his position at Tempe High.
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