Ms Rindenhour began teaching at the school in August last year after graduating from Liberty University in Virginia.
She resigned from her role, Cabarrus County Schools said in a statement.
It can intervene if it sees worrying trends or serious matters of concern.
Dating is a stage of romantic relationships in humans whereby two people meet socially with the aim of each assessing the other's suitability as a prospective partner in an intimate relationship or marriage.
Whatever you are looking for, we wish you luck on Muddy Matches!
We are a member of the Online Dating Association (ODA) which was set up to ensure high standards of behaviour by dating service providers serving the UK.
The ODA Code of Practice is binding on members of the Association.
As an ODA Member we are required to have appropriate and effective arrangements in place for dealing with complaints and enquiries.
While the term has several meanings, the most frequent usage refers to two people exploring whether they are romantically or sexually compatible by participating in dates with the other.
With the use of modern technology, people can date via telephone or computer or meet in person.
The ODA provides general information on common enquiries users have about dating services but will not deal directly with individual complaints which are properly the responsibility of member companies.
The ODA monitors enquiry and complaint levels and the issues complained about.
At Muddy Matches we have over 200,000 members from the UK and Ireland who all have one thing in common: they love the countryside!