NEW YORK - Neither Mayor Bill de Blasio nor Department of Education Richard Carranza could explain Monday, less than four weeks before public schools reopen, who will teach blended learning students on the days they learn from home. 

"Some of this will be determined in the actual doing of it," de Blasio said. "This is a work in progress."

While the Department of Education's goal is to have all students taught by teachers from their own school, Chancellor Richard Carranza said he could not guarantee it would happen.

"It's going to depend on how many teachers at that school are in remote mode," Carranza said. "We are in the throes of all of those details." 

When asked about how the city would provide in-person learning to District 75 special needs students, Carranza said facilities and specialized programs were too varied to provide one overarching plan. 

"There are literally tens of thousands of these kinds of scenarios," Carranza said. "To incorportate every single one of those individual scenarios is obviously not feasible." 

De Blasio did provide more information about how schools would be cleaned and students encouraged to social distance, announcing the city would distribute 4 million face masks, 3,750 electrostatic sprayers, 210,000 social distancing signs and 7,350 maintenance staff members who will disinfect campuses daily.

There will also be a DOE hotline for school principals and surprise school inspections throughout the semester, the mayor said.

During his daily press briefing, de Blasio also addressed the high crime rates over the weekend, which spurred President Donald Trump to repeat his threats of federal intervention, tweeting Sunday night, "Law and Order. If the mayor can't do it, we will!"

De Blasio accused the president of blustering and trying to draw attention to himself. 

"Everyday New Yorkers understand we've been pulled through hell," de Blasio said. 

The mayor updated New Yorkers on Sunset Park - which has seen an uptick in COVID-19 cases in recent weeks - noting the city has conducted 7,300 door-knock and 5,200 tests, as well as made 77,000 robocalls and 35,000 live calls.

"We do not have a cluster situation," the mayor said. "We do see individual household with specific problems."

De Blasio also addressed video that shows him turning his back on a Chinatown bakery owner trying to express concerns about small businesses in his neighborhood. 

"Everyone wants to be offended by everything," de Blasio said. "No one was disrespected, they were heard."