Acasia Welburn, now 26, of New Road in Telford, was sentenced to two and a half years in prison.
Welburn had pleaded guilty to three counts of sexual activity with a child by a person in a position of trust.
She appeared at York Crown Court for sentencing.
A statement from North Yorkshire Police said Welburn’s “reign of abuse” began while she was working at a school in a position of trust.
A spokesperson said: “Welburn began having sexual contact with an autistic teenager. She initially made contact with the boy on social media, which involved sharing sexual messages and images.
“A series of shocking abuses followed, as she regularly met the victim for sex in his car and at his flat.”
Detective Constable Alison Morris, from North Yorkshire Police’s non-recent sexual abuse team, said: “I cannot praise the victim enough for the incredible courage and determination she has shown.
“This is another case that demonstrates that it is possible for victims to seek and obtain justice.
“We encourage anyone affected by a crime to contact the police. They will be supported and listened to.”
