Joshua Alexander Evans, 32, was arrested following an Anaheim Police Department investigation.
Evans, an English teacher at El Rancho Charter School in Anaheim Hills, is accused of "developing a relationship" with a 14-year-old female student, according to police, between December 2011 and January 2012.
The student's mother discovered that Evans allegedly met the teen at another student's home and kissed the teen on the mouth and embraced her.
If convicted, Evans faces three years and eight months in state prison and mandatory lifelong registration as a sex offender.
Evans was held on $100,000 bail. He is scheduled to be arraigned Monday at 10 a.m. in Santa Ana.
Police suspect there may be other victims. If you have information related to the case, contact Supervising District Attorney Investigator Lou Gutierrez at (714) 347-8794 or Detective Joe Atkinson at (714) 765-1487.