Prosecutors have stayed all charges against a B.C. teacher accused of sexually assaulting two elementary school students.

Jason Epp, formerly a teacher at Sardis Elementary in Chilliwack, was charged last year with two counts each of sexual assault and sexual interference with a minor involving students at the school.

Since his arrest in May 2010, investigators have conducted more than 130 interviews, including many with former students. After reviewing the case files, Crown lawyers announced Wednesday they will not proceed with charges.

"The Crown realized that they did not have a substantial likelihood of conviction," spokeswoman Samantha Hulme told CTV News.

She said she could not expand on the reasons for that decision.

Epp's lawyer Claire Hatcher says his family is pleased by the news.

"We have maintained Mr. Epp's innocence since the beginning of the investigation. The past 16 months have been tremendously stressful for Mr. Epp and his family; clearly there has been a profound impact on their lives," she said in a statement.

"Mr. Epp and his family are looking forward to moving on with their lives in a positive and productive manner."

Epp, 39, was released on bail last year on strict conditions that he stay away from current and former students, as well as places like swimming pools and playgrounds that may be attended by minors. He has been suspended from teaching since July 8, 2010.