During the record-breaking heat wave in the first week of October, more than nine in 10 Los Angeles Unified schools were in areas with high or severe heat risk, up from about one in six during the first week of the school year.

other discussions
 

During the record-breaking heat wave in the first week of October, more than nine in 10 Los Angeles Unified schools were in areas with high or severe heat risk, up from about one in six during the first week of the school year.