The Oklahoma City school district is moving ahead with a $180 million bond election to address building maintenance issues, replace aging buses and equip every school with the latest technology.

School board members took action Tuesday to send three propositions to voters, including one for $106.3 million to repair or replace heating and air conditioning systems at nearly 80 schools.

Superintendent Aurora Lora said the improvements are badly needed, pointing to a number of problems with cooling systems that have surfaced since school started Aug. 1.

"It's been challenging when you send crews out to fix the air conditioning and we think we've got it done, and it breaks again the next day," Lora said after the special meeting. "And that's just because some of our systems are really old and just need to be replaced."