Research suggests Australian schools need better ventilation to improve student health and productivity.

Researchers from the University of New South Wales found many students could be learning in classrooms with CO2 levels four times the recommended threshold. High CO2 levels can cause headaches, sleepiness, and tiredness. 

Professor Mat Santamouris says improving indoor environmental quality is as important as improving the teaching material in the classroom. 

“School kids aren’t just little adults...they need specific environmental conditions to be comfortable," said Mr Santamouris.