Around 4,100 Detroit Public Schools teachers received layoff notices and will have to reapply for their jobs next month if they wish to continue to work for the district.
The Detroit News reports the layoffs are effective just days ahead of the next school year on August 24.
School district spokesman Steve Wasko said the letters were mailed on Tuesday.
"This was done previously; what's different and what parents should be aware of is the process to call staff back," Wasko said. "Based on new state law, all school districts are precluded from making hiring decisions based solely on seniority; thus decisions will be made based on evaluations."
Wasko said this will help ensure that the district brings back "the right number of teachers given its need to downsize andplaces only teachers in the top categories based on objective evaluations" in front of children.
The News reports DPS did the same thing last year "and spent the summer calling back teachers for positions."
The district experienced an attendance spike in September and after many classrooms became overcrowded had to call back additional teachers. All but about 400 teachers were eventually called back.
President of the Detroit Federation of Teachers Keith Johnson said "they are doing this again like they did last year and it's going to be chaos again in September... I'm preparing for battle."