SAN ANTONIO — An angry group of teachers rallied outside San Antonio ISD headquarters Thursday. They said they're tired of the board and superintendent not listening to them.

Recently the board voted to amend a policy that governs teachers' work schedules.

"It's not so much the policy change that's driving us crazy,” Adrian Reyna, a teacher at SAISD, said. “What's driving us crazy is the lack of teacher input, the lack of teacher voice, the lack of community input and voice."

The policy approved Wednesday allows school principals to set their teachers' hours. That means teachers may be asked to come in early or stay late to help as needed. Exactly how long, hasn't been set yet. The San Antonio Alliance of Teachers and Support Personnel have filed a grievance against the district.

"This administration is flying the plane while they're building it," Shelley Potter, president of the San Antonio Alliance, said.

She says the policy that could require teachers to work extended hours goes against teacher contracts.The school district says the policy is not about giving teachers more work, but about student safety and better customer service for parents.

"This is not about having people that are already working day and night work longer hours but it's truly [about] how do we manage our talent pool," Rhodes Middle School Principal Moises Ortiz said.

Right now, if a school day for a student starts at 8:45 a.m. and ends at 4:15 p.m., teachers’ work days technically start and end at the same times too, but that means students are sometimes left unsupervised before and after the instruction begins.

"We have approximately on a daily basis anywhere between 1,000 to 1,300 students,” Burbank High School Principal Miguel Elizondo said. Right now I only have, including myself, five administrators on my team. To be able to come up with a system that I feel is appropriate for our kids and our families, we need more than five people to do that."

Principals claim parents have also requested more be done to accommodate students. Other school districts in San Antonio already allow principals to put teachers on rotation to supervise before and after school, allowing for students to be dropped off earlier and picked up later.

While the protests continue the district's principals are set to begin working with teachers next week to iron out new schedules.