Satanic Temple has submitted applications to various county school boards requesting it starts extra-curricular activities for kids.
It is technically legal after a 2001 US Supreme Court found public schools could not discriminate against religious after-school activities.
Los Angeles Unified School District has already rejected Satanic Temple's application to run after-school clubs but other boards are still considering them.
It's been reported that Satanist after-school clubs in Oregon and Seattle, Washington could happen within months.
On its website, Satanic Temple says: "It's important that children be given an opportunity to realize that the evangelical materials now creeping into their schools are representative of but one religious opinion amongst many.
"While the Good News Clubs focus on indoctrination, instilling them with a fear of Hell and God's wrath, After School Satan Clubs will focus on free inquiry and rationalism, the scientific basis for which we know what we know about the world around us.
"We prefer to give children an appreciation of the natural wonders surrounding them, not a fear of everlasting other-worldly horrors."
Michael Doss, a pastor in Tacoma, Washington, told the Daily Express: "My son will not be at a school where they're preaching against what I believe.
"I still have a baby in Tacoma schools. And if I have to take my baby out of Tacoma schools, I'm going to home-school because if they want to allow this stuff, I'll do that."
