Sign up for Chalkbeat Chicago’s free daily newsletter to keep up with the latest education news.Chicago Public Schools will stay open May 1 for now, despite a push from board members and the Chicago Teachers Union to allow teachers and students to join a nationwide protest that day, in part against the Trump administration. But it’s still possible schools will close that day, since a majority of Board of Education members support the move.In a statement issued Thursday afternoon, interim CPS CEO Macquline King — who will begin leading the district permanently July 1 — said she’s recommended that school should stay open. She added that if the board wants to cancel classes, it must convene a special meeting and take a formal vote “as soon as possible.”“Our staff, students and families need a clear understanding of what to expect on May 1,” she said. Union leaders have pushed for the day to be a teacher-directed professional development day — for which students are off from school — so that teachers and students could participate in the national day of “no school, no work, no shopping.” The protest is meant to advocate for raising taxes on the rich, reining in immigration enforcement, and more funding for schools, union officials have said.The disagreement could be an early test of King’s leadership of the district, which is confronting a range of challenges. Mayor Brandon Johnson, a former CTU organizer and close ally of the union’s, previously said he supports letting students miss school on May 1, according to the Chicago Sun-Times. But confusion over whether the day would be off began Wednesday, after a memo from King leaked to the press. King’s memo, dated Tuesday and delivered to board members, said she wanted to keep classes in session in order to “ensure continuity of instruction, maintain safe and supervised environments, and minimize disruption for families,” including providing access to free student meals, according to a copy of the memo obtained by Chalkbeat. She also noted that in a recent survey, 113 schools — or roughly one-fifth of all schools — reported a range of activities happening May 1, including field trips, college-decision day events, sports events, and make-up AP testing, the memo said. Just over 100 schools said they had out-of-school activities planned, including prom and senior night. Those activities, which required “months of planning and financial commitments” could be difficult to reschedule as the district gets closer to the end of the year, the memo said. Board members are split on calling the day off. But also this week, the Chicago Teachers Union filed a grievance against the district, claiming CPS had violated its contractual agreement when planning this school year by failing to work with the union to schedule one professional development day for the 2025-26 school year. In a letter dated Monday, CTU president Stacy Davis Gates wrote that the contractual language was negotiated “with the express purpose of accommodating a day of civic action on May 1.”King notes in her memo that the provision cited by the union is set to take effect next school year, not this year. The school board adopted its calendar for next school year, when May 1 falls on a Saturday. The union has also pointed to a state law allowing middle and high school kids to participate in a civic event. But in her memo, King said the law allows those students to take one excused absence a year for such an action and doesn’t allow a district-wide day off. The grievance and the matter of May Day came up during the board’s closed session on Wednesday, board members said. King asked board members to weigh in and presented them with multiple options, including to keep schools open. A majority of board members, who are aligned with the mayor, voiced support for canceling classes on May 1, and some of those who were opposed stated that King had switched her position after the board’s closed session. Debby Pope, an appointed board member, said board members shared many perspectives, including concerns for working parents. Pope said she supports closing schools May 1 because the nation is in “unprecedented times” and that “education takes many forms,” including participating in or learning about protests. Other board members have stated staunch opposition, including Jessica Biggs and Jennifer Custer, both elected board members who have announced their runs for board president. On X, formerly known as Twitter, Biggs said, “The academic calendar has been set. Key end of year activities are planned. Our teachers are working hard to wrap up the year on a focused note. And our families count on our schools to do what they say.”Custer started a petition online calling for school to stay open. On Thursday morning, King convened a call that included leaders from CTU, the city’s principals union, and the mayor’s office so that they could plan for different scenarios, but no final decision had been made, according to Kia Banks, president of the principals union. Banks said all parties are trying to be “aware of our civic responsibilities while preserving or protecting our learners.” A source close to CTU said it has been in “productive meetings” figuring out plans with the district, the principals union and the mayor’s office.It remains unclear how staff in other unions, such as those who represent custodians and other support workers, would be affected or if they were included on the Thursday morning call. Board President Sean Harden issued his own memo to King and some of her top cabinet members on Thursday, expressing the board’s support for King to “operationalize a day of civic action” on May 1.King responded the same day, telling Harden that she was sticking by her statement that the district’s position “is to remain open May 1.” She also reiterated her call for the board to publicly vote on the matter. Reema Amin is a reporter covering Chicago Public Schools. Contact Reema at ramin@chalkbeat.org.