While not on Thursday's agenda, parents are expected to voice their opinions on "May Day."
Some Chicago school parents are frustrated with plans for May Day. Some said they weren't included in planning.
Parents will deliver a letter to the CPS board with their attorney.
RELATED: Chicago Public Schools, CTU agree to make May 1 day of civic action; school will remain in session
Chicago Public Schools and the Chicago Teachers Union have reached a deal that schools will remain open on May 1.
Teachers and students will be allowed to participate in May Day pro-workers rallies.
A group of parents have hired the same lawyer who represented then CPS CEO Pedro Martinez and are threatening legal action if they don't get more clarity on what will happen on May Day.
"They did this without the consent or the input of the parents," CPS parent Judy Velez said. "This is not only wrong, it is irresponsible or perhaps even illegal."
Chicago Public Schools reiterated that May 1 will be a full day of instruction. CPS said participation in any civic events is voluntary, and parental permission is required.
For teachers and students not participating in the May Day rally at Union Park, CTU and Mayor Brandon Johnson are calling for civic engagement activities in school.