Effect of classroom temperature on a studentís performance
The hypothesis that students will perform better when the classroom is at a temperature of 20°C is not correct.
Not everyone is comfortable at the same level of temperature in the classroom. What is comfortable for one person may be too warm or too cold for another person. In our experiment, it is possible that some students felt too cold at a temperature of 20°C whilst it is very likely that all of the students were too hot to be able to concentrate effectively at 30°C. Therefore, it is better to set a lower temperature so that students who find it too cold are able to simply put on a sweater or jacket to keep themselves warm. This will create a comfortable environment for all
The science fair project can also be repeated to compare whether a change in classroom temperature affects males and females differently.
Lower temperatures, increased ventilation boost student performance - http://www.ashrae.org/pressroom/detail/15880
Is your academic performance tied to classroom temperature? - http://www.studentstuff.com/2010/03/24/is-your-academic-performance-tied-to-classroom-temperature