State police say 36-year-old Stanley Zakrociemski of Millsboro was charged Wednesday with five counts of sexual solicitation of a child.
Although the student is now 18, police say Zakrociemski started sending her text messages of a sexual nature starting last March, when she was 17.
Police say the relationship between the student and the teacher never became physical.
Police say he kept sending the texts for nearly a year until a school employee became aware of them.
Zakrociemski turned himself in on Wednesday and was being held on $100,000 bond.