WASHINGTON (AP) — Two Republican governors are scheduled to speak at a Washington conference hosted by a nonprofit that pushes for private school vouchers and charter schools.

Gov. Scott Walker of Wisconsin and Gov. Tom Corbett of Pennsylvania will address the American Federation for Children’s second annual policy summit Monday.

Both are expected to talk about school choice. Walker has proposed expanding a school voucher program in Milwaukee. Corbett is proposing cutting $1.6 billion from public education while also pushing for vouchers, which would allow students in poor-performing public schools to transfer to private schools.

Union leaders and other activists are planning a rally outside the summit, which will also feature former District of Columbia schools chancellor Michelle Rhee. Opponents say the federation is trying to “dismantle public education.”