DENVER -- Some Colorado parents are outraged about President Barack Obama's planned nationwide address to school children, saying he's trying to indoctrinate students with his agenda.

Obama plans to address students across the nation on Tuesday with a message about staying in school, working hard and achieving educational goals.

Shanneen Barron, a Highlands Ranch mother, said she normally isn't involved in political activism, even though a sign in her front yard reads "Vote Republican."

But she said she is worried that Obama will put forth a socialist agenda and try to indoctrinate her children.

"Thinking about my kids in school having to listen to that just really upsets me," she said. "I'm an American. They are Americans, and I don't feel that's OK. I feel very scared to be in this country with our leadership right now."

She and her husband will keep their kids at home Tuesday when Obama makes his nationwide address to students.

They're not alone.

Districts across the metro area are getting calls from concerned parents.

Douglas County Schools even posted an online policy: it will treat the address as a guest speaker and allow parents to opt out their children.

A White House spokesman released this statement: "The President will speak directly to students around the country about the value of education and the importance of staying in school as part of his effort to dramatically cut the dropout rate. It's not a policy speech."

Supporters are concerned about what they call the increased politicization of issues by extremists.

"It's just kind of ridiculous to think that people are worried that a visit from the president is going to turn their children into socialists overnight or be the kick start to a socialist program," said Ryan Kelling, a Denver resident. "There's not much debate about real issues, and this just continues the trend of politicizing everything."

As conservatives rally around the issue, it's important to note this isn't the first time a president has spoken directly to school children.

President George H.W. Bush gave a live address from a Washington classroom in 1991 to stress the importance of achievement in education.