Updated at 5:53 p.m. ET
In a major victory for the school choice movement, the U.S. Supreme Court effectively killed state constitutional provisions in as many as 38 states that bar taxpayer aid to parochial schools. The vote was 5-to-4, with Chief Justice John Roberts writing the decision for the court's conservative justices.
The court's decision is the latest in a series of recent rulings that have lowered the traditional wall separating church and state, by requiring government entities to treat religious and non-religious institutions more equally, even when that means sending public money to religious institutions.
Tuesday's case began in 2015 when the Montana Legislature passed a bill providing a dollar-for-dollar tax credit for individuals who donate to organizations that provide scholarship money to students in private schools. An organization called Big Sky began raising money to fund these scholarships, using the tax credit as an incentive. Of the 13 schools that got scholarship money from Big Sky, 12 were religious schools. Indeed, 70% of all private schools in Montana are religiously affiliated.
Ultimately, the Montana Supreme Court struck down the entire tax credit program for all private schools, religious and nonreligious alike. It said the tax credit conflicted with the state constitution, which bars all state aid for religious education, whether direct or indirect, including tax subsidies like this one.
But in Tuesday's opinion, Roberts said the state court had it backward.
"A state need not subsidize private education, but once it decides to do so it cannot disqualify some private schools because they are religious," he wrote. Thus, the tax credit created by the state legislature to benefit students attending qualifying private schools, including religious schools, must stand as originally designed.
Justice Ruth Bader Ginsburg rebutted Roberts' argument in a dissent joined by Justice Elena Kagan. Ginsburg argued that because the Montana Supreme Court invalidated the program entirely, it did not discriminate against students attending religious schools at all, writing that because the state court's "judgment put all private school parents in the same boat—this Court had no occasion to address the matter."
Justices Stephen Breyer and Sonia Sotomayor penned dissents of their own.
Breyer asked: "What are the limits of the Court's holding?" He feared that the court's logic could lead to extreme consequences in the future, perhaps even a decision requiring states to fund private religious schools even if they would rather use their money to fund public schools exclusively.
Sotomayor called the decision "perverse" for throwing the constitution's religion clauses out of balance.
Meanwhile, several of Roberts' conservative colleagues chimed in to agree with the court's ruling and express their own views on the subject. Justice Clarence Thomas called on the court to adopt a more limited view of the U.S. Constitution's establishment clause, which prohibits federal, state, and local government from favoring certain religions.
Justice Neil Gorsuch urged the court to go further to protect the free exercise of religion, barring discrimination not just against the religious identity of would-be recipients of public funds, but their religious activity as well.
Justice Samuel Alito used his concurrence to recount the troubled history of so-called "baby Blaine amendments," no-aid provisions in the state constitutions of 38 states that, like Montana's constitution, prohibit public funds from benefiting religious schools.
Such provisions are named after James G. Blaine, who proposed a similar amendment to the U.S. Constitution in 1875. While the original amendment failed to pass, variations of it were adopted in most states. Many scholars today view the adoption of these amendments, mostly in the late 1800s, as a bigoted reaction to the mass immigration of Catholics into the U.S., a narrative that Alito embraced wholeheartedly.
While Montana's original no-aid provision was enacted in the 1880s, the current state constitution is no relic of the past. It was completely rewritten in 1972.
Mae Nan Ellingson, one of the delegates to the 1972 constitutional convention, said that ultimately the convention adopted the "no-aid" amendment in part "to protect religious liberty" and that the "no-aid" provision was "never even a threshold issue."
Regardless of their origins, experts on both sides of the issue agreed that the practical effect of Tuesday's decision is to neuter these state constitutional provisions which, until now, have limited state aid to religious schools to one degree or another.
Francisco Negron, chief legal officer for the National School Boards Association, said that these provisions are "near death."
Dick Komer, a senior attorney for the Institute for Justice, which brought the case on behalf of several parents with children in religious schools in Montana, celebrated the decision and called on state legislators to capitalize on the moment to create programs that allow state funds to benefit private religious schools.
"The legal impediments to effective school choice programs are now removed, and it's up to state legislatures now to move forward," Komer in a press briefing.
Publicly funded voucher and tax credit programs currently provide aid to private schools in 26 states, according to John Shilling, president of one of the country's leading school choice advocacy organizations, the American Federation for Children.
"What we would like to see is state policymakers really step up to the plate here and expand ... school choice programs, and to enact it in the 24 states that don't have these programs," Schilling said.
Stanford Law professor Michael McConnell said he saw the decision as good for education all around.
"When you have a state where ... a significant minority of parents are using private schools, they're going to be voting against increasing taxes for public education," he said. "But if they are able to share in the education pot, they may move to supporters of greater aid to education."
Until now, these aid programs, which mainly benefit private religious schools, have amounted to a relatively small $2.6 billion in aid out of more than $700 billion spent on public education each year, according to Schilling. But school choice advocates, including the Education Secretary Betsy Devos, have pushed hard to increase the funding for what she calls faith-based education.
If the state is going to funnel more money to private education, said the School Boards Association lawyer Negron, that will likely provoke more litigation.
He said some states might look at Tuesday's decision and say, "If you're going to take state money," then "you can't discriminate against students on the basis of sexual orientation." Or, states may condition public funds on satisfying public health requirements, "which means that all children have to vaccinated."
Colorado Attorney General Phillip Weiser, who filed a brief on behalf of nine states in the Montana case, said that funding private schools can cause a backlash. He noted that when the school board in Douglas County, a suburb south of Denver, adopted a program that threatened to siphon public money from public schools, "there was a huge backlash. And not only did our [state] supreme court invalidate the program, but the school board that pushed the program got voted out as well."
That said, Tuesday's ruling was a personal victory for the parents who challenged the Montana ban on aid to religious schools.
Kendra Espinoza, the lead plaintiff, was elated. The office manager worked extra jobs so that her two daughters could attend the Stillwater Christian School in Kalispell, Mont.
"Today is truly an historic moment and a big victory for our family and for so many other families," she said.
The ruling was also cheered by some religious groups, as well as the White House. Press Secretary Kayleigh McEnany issued a statement celebrating the decision.
"The Trump administration believes that school choice is a civil rights issue, and that no parent should be forced to send their child to a failing school," she said.
Andrea Picciotti-Bayer, legal adviser at the Catholic Association, called it "a welcome victory for religious freedom and countless American families," adding it will give "low-income students a chance to attend religious schools of their choice using state-endorsed private school scholarship funds."
Meanwhile, Lily Eskelsen Garcia, the head of the country's largest teachers union, called the decision "shameful and unacceptable." In a statement, she said: "At a time when public schools nationwide already are grappling with protecting and providing for students despite a pandemic and mounting budget shortfalls, the court has made things even worse opening the door for further attacks on state decisions not to fund religious schools."
Though a sweeping victory for school choice advocates, the court's opinion still leaves some questions unanswered.
David Strauss, a law professor at the University of Chicago, observed that the two religions clauses of the First Amendment are often in tension.
"We want a principle that says the government shouldn't be paying the salaries of members of the clergy," he said. "But on the other hand, if a fire breaks out in a church, you don't want the fire department saying, 'Oh wait a second, it's a church; we can't put out the fire.'"
Emmett Witkovsky-Eldred contributed to this report