A high school English teacher Thursday was sentenced to three years probation for having sex with an underage girl at her school. Crissy Torcella Hisey, 28, must also serve 118 weekend days in the county jail, but will not have to register as a sex offender, Ryan Hightower of the Riverside County District Attorney's Office said. Hisey pleaded guilty in August to 10 counts of oral copulation with a child under 18.