Teachers carry placards as they walk a picket line outside South High School early Monday, Feb. 11, 2019, in Denver. The strike on Monday is the first for teachers in Colorado in 25 years after failed negotiations with the school district over base pay.
Teachers carry placards as they walk a picket line outside South High School early Monday, Feb. 11, 2019, in Denver. The strike on Monday is the first for teachers in Colorado in 25 years after failed negotiations with the school district over base pay. David Zalubowski AP Photo
Teachers carry placards as they walk a picket line outside South High School early Monday, Feb. 11, 2019, in Denver. The strike on Monday is the first for teachers in Colorado in 25 years after failed negotiations with the school district over base pay. David Zalubowski AP Photo