Student performance has been on a declining trend for 10 years. Student scores have dropped significantly in the past 5 years, losing almost the equivalent of a year of schooling. Over 60% of 15 year olds are falling behind in 18 countries.
Student performance has been on a declining trend for 10 years. Student scores have dropped significantly in the past 5 years, losing almost the equivalent of a year of schooling. Over 60% of 15 year olds are falling behind in 18 countries.
Higher levels of atmospheric CO2 could be increasing CO2 concentration inside buildings with poor ventilation.