A longtime Greeley Spanish teacher is behind bars today after an anonymous online tip to Greeley police on Friday revealed she sexually assaulted a student two years ago.

Rhonda Eisenberg, 44, was booked into Weld County Jail Tuesday afternoon, after police say she admitted to having a sexual relationship with a 17-year-old student while he lived with her in 2010. Police said she admitted to having a child from the relationship.