Denver Public Schools teachers voted to strike on Tuesday after a weeks-long stalemate with the district stemming mostly from a simmering disagreement about salary. 

At least two-thirds of the members of the Denver Classroom Teachers Association had to approve of a strike. Rob Gould, the spokesperson for the DCTA, said 93 percent of teachers voted to strike. This is the first time Denver teachers are slated to walk off the job since 1994. 

"The members have spoken and we’ll be going back and preparing teachers since we haven’t had a teacher strike in 25 years," Gould said Wednesday morning. "That’s our first question - what do we do, how do we make this happen? At the same time, our negotiations team is going to be ready to go whenever Susana [Cordova, the DPS superintendent,] is ready."

Watch Wednesday morning's interview with Becca Hendricks, DCTA negotiation team member below: 

One of the major sticking points for teachers that led to the strike vote was base salaries. DPS is offering $26.5 million in raises – something that district Superintendent Susana Cordova has said averages out to around 10 percent per teacher. But the union is asking for an additional $8 million, which they say is just 1 percent of the district’s budget.

When talking strictly about money, Cordova said the proposals were about $8.5 million apart, but she added when other factors were considered things get more complicated.

"There's some significant differences in proposals we've put together. From the district perspective we want to make sure we continue to reward the teachers who work on our title 1 schools and in 30 of our highest poverty schools," Cordova said Wednesday. "When we look at that difference it puts the proposals over $16 million apart."

The union's priority is base salaries. DCTA has said they would like to see that additional money put toward that instead of bonuses, which it argues can be unpredictable.

"You might have heard [DPS] talking about highest priority schools, DCTA really believes that money should be put toward base salaries for teachers, instead of bonuses or one time incentives which are pretty unpredictable and difficult to live with," said Becca Hendriks a teacher and union negotiator who appeared on 9NEWS Wednesday morning.

Watch a statement from the Denver Classroom Teachers Association below: 

RELATED: 4 educators weigh in on the potential DPS teacher strike

The bargaining also included simplifying the pay system and providing a clear way for teachers to earn incentives. 

"Denver teachers no longer want to be subjected to an unpredictable pay system overloaded with one-time bonuses and incentives that are outside of educators’ control and that change in size and availability year-to-year," DCTA's statement reads. "The uncertainty in take-home pay from one year to the next does not make Denver an attractive place for teachers to settle in and plan their careers, and raise their own families."

Denver schools will stay open through the strike

After the strike announcement, Cordova said the district remained committed to reaching an agreement with teachers and to keeping schools open. On Wednesday morning, during an appearance on 9NEWS, Cordova said she would be meeting with Gov. Jared Polis later in the day.

"From our perspective, we think it's going to be very important that the governor consider how he can support the ongoing conversations to get us to an agreement," she said. "We think it's in everybody's interest for school to not be disrupted and for us to be able to make sure our teachers are in classrooms on Monday."

Gould, the chief negotiator for the teacher's union said Wednesday they were waiting to hear from the governor but had been in touch with the Department of Labor. They formally requested the department's intervention Wednesday afternoon.

"We really hope the governor recognizes we have a problem with teacher retention in Denver and that we’ve been trying hard to negotiate something that will work for our teachers," said Hendricks, a teacher who spoke on 9NEWS Wednesday morning. "We really do need a major change and I hope that he [the governor] recognizes that."

Hours before the vote on Tuesday, DPS assured parents that schools in the district will stay open for the "foreseeable future" regardless of the strike. On Facebook, the district said that all services – including bus transportation and school meals – will be offered as normal.

"Our commitment to our community is to continue to serve our students," Cordova said Wednesday. "It is so critically important. We have many children who truly depend on the Denver Public Schools both for their education for their well being." 

Watch Wednesday morning's interview with DPS Superintendent Susana Cordova below:

RELATED: DPS to parents: Denver schools will stay open whether or not teachers strike

To do it, the district plans to use an existing pool of 1,200 substitutes and recruit others, as well as expedite the licensure and interview process. DPS has also been recruiting federal furloughed workers and has said it plans to pay substitute teachers double in the event of a strike. 

On Wednesday, Cordova confronted whether or not that was sustainable.

"No," she responded. "And the most important thing we can do is work with our teachers to get an agreement. I think everybody realizes the best solution is for us to find the pathway to agreement. The most important thing for our students is to have their teachers in their classrooms, and that's our goal."

Teachers though, at least according to the union, appeared ready to dig in for as long as it takes.

"We at this point, we need to go as far as it takes," said Hendricks. "It's a dire issue. We're losing teachers at an incredible rate. So I think it’s an important time to take a stand. So, personally, I would say as long as it takes - we’re willing to do. It's really important for the future of our profession. It's really important for our students. And I think we’ve got the backing and support to make this happen."

Watch a statement from Denver Public Schools Superintendent Susana Cordova below:

A possible Colorado intervention 

While teachers have the right to strike in Colorado, the state reserves the right to intervene although it can't force either side to do anything. 

If the Colorado Department of Labor and Employment doesn't intervene - which DPS has asked for as of 2 p.m. Wednesday - teachers would be allowed to strike as soon as Monday, Jan. 28. 

RELATED | What would a state intervention look like?

When asked about the possible strike on Sunday, Polis was careful not to take sides but hoped for a resolution without the state getting involved. 

Before pitching lawmakers on his free full-day kindergarten payment proposal, Gov. Jared Polis (D-Colorado) took his plan straight to kindergartners.
Bryan Wendland

“I think, like most Coloradans, I really hope that the district and the teachers reach an agreement. Like most Coloradans, I think teachers should be paid better," Polis said. "I think it's really important that we be able to provide an education for kids. So, I'm certainly encouraging both sides to work together. I think the differences are a lot smaller than they were at the start and I'm really hoping that they can overcome them and reach a settlement that's good for teachers and good for the district.”

Polis hadn't responded to the news of the strike at the time of this writing. 

How to become a substitute teacher in Denver Public Schools

To become a substitute or guest teacher in Denver Public Schools, a candidate must have a bachelor’s degree and apply for a license from the Colorado Department of Education.

According to the district, candidates must have a three-year substitute authorization, Initial or Professional License or a five-year substitute authorization from the education department.

RELATED: Denver school nurses could join DPS teachers if they strike

Denver Public Schools then requires fingerprinting and a background check from potential candidates. The district has offered to cover the cost of fingerprinting and background checks and will reimburse potential candidates for the cost of their licensing.

RELATED: Denver Public Schools recruits workers affected by government shutdown as substitutes ahead of potential strike

The district is also offering to pay more for substitutes during a strike. Daily substitutes could make $212 each day, up from the usual rate of $106.80. Retired teachers and some of the district’s more frequent subs could be eligible for $250 each day during a strike.

SUGGESTED VIDEOS | Local stories from 9NEWS