Boyle was arrested in June by agents with Customs Enforcement's Homeland Security Investigations on suspicion of distributing child pornography on the Internet.
The eighth-grade teacher at Royal Oak Middle School allegedly met an undercover agent in his classroom so they could look at child pornography.
The investigation of Boyle also suggested Boyle may have molested children, according to the U.S. Attorney's Office.
If convicted, Boyle faces a sentence of life imprisonment.
Hazel Lodevico-To'o contributed to this report.