Chicago mayor sues to end teachers strike Updated at 11:10 a.m. ET: Chicago Mayor Rahm Emanuel is taking the teachers strike to court. Emanuel made good Monday on promised legal action to try and end the first Chicago teachers strike in 25 years, instructing his lawyers for Chicago Public Schools to file an injunction to get kids and teachers back in class. The injunction was filed Monday morning at the Richard J. Daley Center. It asks a judge to immediately end the strike. "I will not stand by while the children of Chicago are played as pawns in an internal dispute within a union," Emanuel said Sunday in a statement. This was a strike of choice and now a delay of choice that is wrong for our children. The first Chicago teacher entered its second week Monday, pushing students' earliest return to class to Wednesday. Union delegates on Sunday deferred their vote to end the strike and asked for more timeto review a proposed teachers' contract drafted last week by school officials and the Chicago Teachers Union. John Gress Chicago Teachers Union members leave a House of Delegates meeting on the seventh day of their strike in Chicago, September 16, 2012. "This continued action by union leadership is illegal on two grounds," Emanuel said. It is over issues that are deemed by state law to be non-strikable, and it endangers the health and safety of our children. Union delegates aren't scheduled to meet again until Tuesday out of respect for the Jewish holiday, Rosh Hashanah, which began at sundown Sunday. Emanuel has no scheduled events Monday. More than 26,000 teachers and staff walked out last Monday, leaving more than 350,000 students unattended. For five days, thousands of teachers picketed outside schools and twice converged on the Board of Education headquarters downtown. 'Not happy' In earlier developments, delegates from the Chicago Teachers Union told their bargaining team Sunday that they want to meet with the schools they represent before making a decision about whether to end their strike. "They're not happy with the agreement and would like it to be a lot better for us than it is," Union President Karen Lewis said in a news briefing Sunday evening, adding that they are returning to their schools with the proposal because they do not want to feel rushed to make a decision. Public school teachers rallying at Chicago's Congress Plaza protest against billionaire Hyatt Hotel mogul Penny Pritzker, who is also a member of the Chicago Board of Education on Thursday, Sept. At the heart of those who oppose this new deal -- they feel the negotiating team did not fight for paraprofessionals and special education teachers and students. Teachers revolted last week against sweeping education reforms sought by Emanuel, especially evaluating teachers based on the standardized test scores of their students. They also fear a wave of neighborhood school closings that could result in mass teacher layoffs. They want a guarantee that laid-off teachers will be recalled for other jobs in the district. They're still not happy with the evaluations. They're not happy with the recall (provision)," Lewis said of delegates. Still, Lewis seemed energized in a statement Saturday night, buoyed by the agreement, which came after a weeklong strike that began on Sept. Emanuel's chief negotiator, School Board President David Vitale, said the union should allow children to go back to school while the two sides complete the process. "We've done as much as we know how to do," Vitale said. We reached an agreement with their leadership, we think it's a good agreement. It's time for the teachers to get back in school. As the Chicago teachers strike enters its second week, Mayor Rahm Emanuel hopes to get students back into schools by heading to court. City lawyers are seeking an injunction to force teachers back into the classroom as soon as possible. More than half of large school districts rehire laid-off teachers,according to The New York Times; the Chicago school board has pushed to leave control to principals. Those new hires will allow for the longer class day -- which will be seven hours for elementary school students, up from five hours and 45 minutes. TEXTBOOKS: Chicago students would have their textbooks on the first day of school instead of having to wait up to six weeks.