BISMARCK, N.D. (AP) — A female Bismarck middle school teacher accused of having sex with a 15-year-old male student has resigned.

The Bismarck Tribune reports the School Board accepted the resignation of 35-year-old Susan Duursma on Tuesday.

Duursma was a physical education teacher. She had been suspended without pay since November, after being charged last September with three felony counts of corrupting or soliciting a minor.

Duursma is accused of a sex act with the boy three times between March and July 2013, including once at her home and twice in a vehicle

She has pleaded not guilty and is scheduled for trial May 6.

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