A former dinner lady from the Isle of Wight has been jailed for three years for seven counts of sexual activity with a 14-year-old boy.
Terri Spragg from Bettesworth Road in Ryde was given a 15-month sentence suspended for two years in January.
The 35-year-old has now been sent to prison after her case was referred to the Court of Appeal.
An NSPCC spokesman said: “Spragg deliberately targeted and took advantage of an underage boy. Her deplorable actions will have had a serious effect on the victim and we hope he receives swift support.
“Child abuse has devastating effects and can ruin lives.”
Spragg has been placed on the sex offenders’ register for five years.