LANDENBERG, Penn. – Berks County officials were not amused when they discovered that a former teacher had taken a student’s number – off of a permission slip for a trip to an amusement park – and began sexting him.

Jessica Saienni, 30, a former middle school science teacher in the Reading School District, was arrested last week for having a sexual relationship with a 14-year-old student, reporters The Lehigh Valley Live.

The alleged relationship began shortly after a school field trip to a local amusement park, when Saienni began calling and text messaging the student.

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The victim reported that he had included his cellphone number on a permission slip for the trip and detectives believe this is how Saienni obtained his number.

After exchanging calls and text messages, the teacher and student met on two separate occasions after school hours. On one instance, Saienni brought cake for them to enjoy on the teen’s 14th birthday.

It was after these first two meetings that the text messages and phone calls began turning sexual. Saienni also allegedly began to send the boy sexually explicit photos, reports the Lehigh Valley Live.

Police say that the initial sexual encounter took place in Saienni’s vehicle, while she was parked near a sports and wellness complex.

Several more encounters are alleged to have occurred between June and August 2012.

The victim was able to provide authorities with a detailed description of the inside of Saienni’s home and tattoos on her lower back and thigh. Police were able to successfully confirm these descriptions when they carried out a search warrant, according to the report.

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School officials confirmed that Saienni no longer works for the district, but would not say how she left the job or when.

She is facing charges of statutory sexual assault, involuntary deviate sexual intercourse of a child under the age of 16, sexual contact with a student, corruption of minors, witness intimidation, unlawful sexual contact with a minor and unlawful open lewdness with a minor.

The former teacher is due in court next month.