Denver teachers and school district officials are headed back to the negotiating table on Tuesday.
The city's teachers started striking on Monday for the first time in 25 years. It came after negotiations between the Denver Classroom Teachers Association and Denver Public Schools district failed over the weekend.
The educators want the Professional Compensation System for Teachers reupped; it expired last month. The system allows teachers and school support staff — like nurses — to earn extra money on top of their base pay.
The teachers union proposed a $28.5 million package, but the school district only offered up $23.3 million, according to Newsy affiliate KMGH-TV.
The school district said all area schools will be open on Tuesday, and it was working to end the strike "as soon as possible."
Additional reporting from Newsy affiliate CNN.