"We're not gonna take it - no, we ain't gonna take it", a crowd of educators sang in the state Capitol's stairwell near the House and Senate chambers, coming together in Denver from across Colorado to advocate for more school funding and to oppose some changes to the public-pension system.
Cohn says at this point, she's 51 years old and it's just not feasible for her to start a new career - which means she's dependent on getting the pension benefits she expected.
The Englewood School District was closed Monday because of a lack of substitutes to cover the teachers who walked out.
Henry Roman, a teacher from Columbian Elementary School in northwest Denver, said class size is a pressing issue in his city.
But advocates are pushing for more because the state is now underfunding schools by about $830 million, Dallman said.
"I don't understand how many of these teachers can keep on going day after day with hungry students, students that don't have resources and buildings that aren't air conditioned or cooled properly", Land said.
Mr Beise said the boy was interviewed by police and released to his parents. "You can not pay rent for a one bedroom in Denver on a teachers' salary".
"We need our schools fully funded", Young said. He likened being a teacher to "becoming a father".
"We would rather be with our students", said Ashley, a teacher. A day they hope will show signs of progress.
The rally was organized by the Colorado Education Association. If implemented the measure would raise about $US1.6 billion by increasing the state corporate tax rate and income taxes for people who earn more than $150,000 a year.
And though she'll see her salary increase by about $5,800 with the new pay scale, after 10 years in the classroom, Wiser said she now only makes about $34,000 with a master's degree in chemistry.
Lawmakers raised taxes to permanently increase educators' salaries by an average of $6,100 a year, increase classroom spending and give support staff a raise.
Colorado ranks 40th in spending per student, according to the AP.