A labor standoff between Chicago educators and Mayor Lori Lightfoot confirmed no indicators of abating over the weekend, because the mayor swiftly rejected a proposal by the academics’ union to ramp up coronavirus testing and return to in-person instruction on Jan. 18.

“The most effective, most secure place for youths to be is in class,” Ms. Lightfoot and Pedro Martinez, the Chicago Public Colleges chief government, stated in a joint assertion on Saturday. “College students must be again in particular person as quickly as potential. That’s what mother and father need. That’s what the science helps. We won’t relent.”

Ms. Lightfoot’s and Mr. Martinez’s sharp retort, which additionally accused labor leaders of “not listening,” got here minutes after the Chicago Lecturers Union introduced a proposal for a return to lecture rooms that it framed as a compromise. In it, the union dropped calls for for all college students to supply damaging checks earlier than coming again to class, and stated academics had been keen to return to highschool buildings beginning on Monday, although not for in-person instruction.

“This represents a change in our place,” Jesse Sharkey, the union president, stated at a information convention on Saturday. “We’re interesting to the general public — and to the mayor to seek out in her coronary heart to make the compromise to reopen the colleges.”

A whole lot of hundreds of scholars within the nation’s third-largest faculty district missed three days of sophistication final week after members of the Chicago Lecturers Union voted to stop reporting to work amid issues over the quickly spreading Omicron variant.

College district officers, who’ve insisted that lecture rooms are secure, declined to maneuver to on-line instruction, because the union instructed. Ms. Lightfoot has repeatedly accused the union of inconveniencing working households and harming the educational and social progress of youngsters.

Most American faculty districts have cast forward with in-person instruction, because the Biden administration has urged, even because the Omicron variant has shattered native and nationwide case information. Some massive faculty districts, together with in Cleveland and Milwaukee, have moved lessons on-line. However the dispute in Chicago, the place there was no instruction of any kind since class was dismissed on Tuesday, has been notable for its acrimony and for the day-to-day uncertainty for folks, academics and college students.

Beneath the plan the union outlined on Saturday, Chicago academics would have distributed gear and supplies for on-line instruction and helped mother and father join virus testing on Monday and Tuesday, then taught college students remotely for the remainder of subsequent week.

The union had already stated that members deliberate to return to colleges on Jan. 18, after Martin Luther King Jr. Day, a date that didn’t change underneath the brand new proposal. The union additionally continued to push to have all youngsters enrolled in Covid-19 testing except their mother and father opted them out, a transfer that Ms. Lightfoot has opposed. At present, college students are examined by means of the colleges provided that mother and father proactively give permission.

“The mayor can’t be, like, a tough no and morally against widespread testing,” Mr. Sharkey stated, “and likewise be a tough no and be morally against any short-term interval of distant.”