FREMONT -- A Patterson Elementary School teacher who was placed on paid administrative leave after a 9-year-old student claimed he was slapped twice for incorrectly answering a math question is slated to return to work on Friday, a district official said.

Police said Thursday that the student was not injured. The boy's name was not released.

The third-grade teacher, who this newspaper is not identifying because he has not been arrested or charged, was placed on a seven-day paid administrative leave, on April 29.

The boy's parents said the teacher grabbed the boy's face and slapped it twice in class on April 28 after the boy handed the teacher a math test with a wrong answer.

Fremont police spokeswoman Geneva Bosques confirmed Thursday ¿that a police report was filed on April 29 in connection to the incident. Bosques said late Thursday that the case remains open at the request of the family's attorney.

Attorney Dionne Choyce, representing the student's family, said the incident took place about 15 minutes before the school day ended.

After school, the father said his son was crying and told him what happened, so he immediately reported the incident to the school principal, Choyce said.

Fremont Unified School District placed the teacher on paid administrative leave on April 29, according to assistant superintendent of Human Resources Bob Lee.

On Thursday, Lee said the teacher was cleared return to work on Friday following the conclusion of a district investigation into the matter.

Lee said after police were alerted, the district received a preliminary police report, which was reviewed by district officials.

"We conducted an investigation, which is separate from the police investigation, and from our investigation a determination was made, and appropriate action was taken," Lee said.

He would not say what that determination was, citing confidentiality of a personnel matter.

"It's absurd," the boy's father said on Thursday of the teacher being permitted to return to work. "He's a grown adult admitting he put his hands on my 9-year-old son."

He said he plans to protest outside the school on Friday if the teacher shows up to work and that his son won't return to school.

Contact Natalie Neysa Alund at 510-293-2469. Follow her at Twitter.com/nataliealund.