EL CAJON, Calif. - A female teacher's aide at a school for juvenile offenders pleaded guilty Thursday to having sex with a 15-year-old male student enrolled in the program.

Chrystina Delrosario, 25, is scheduled to be sentenced Jan. 24 at the courthouse in El Cajon.

The defendant pleaded guilty to two counts of having unlawful sex with a minor, admitting she had sex with the boy in a classroom in late June at La Mesa's Reflections Central School, an educational program for juvenile offenders run by the county Office of Education on behalf of the county Probation Department.

Delrosario was arrested July 16 and was later freed on $100,000 bail.