s temperatures dipped into the low 40s this week, students and staff at dozens of Oakland schools shivered in their classrooms, a problem the district spokesman says was caused by "a combination of old equipment and a flawed policy."

Heating problems were reported in about 65 schools and offices throughout the city this week, according to a school district log. As of Thursday afternoon, heat had been fully restored to about 25 schools.

"Obviously, this is unacceptable," said district spokesman Troy Flint. "We apologize to all the students and the families and the staff members who were affected by the heat outage."