Hello, I am Maria. I am a biologist and I own a Master degree in hydrobiology. For the last 12 years I have been teaching biology in senior or/and junior High Scholl in Greece. I live in Veria, a town of approximately 50,000 residents placed in the North of Greece.
Eight of my students participate in the carbon footprint challenge. They all leave in  villages and walk or take the school bus to go to school. The distances covered for transportation are quite small mainly of 5-6 km long. Three of my students have a four figure transportation carbon footprint and they are the ones that have travelled by plane.
They all feed mainly on locally grown vegetables, fruit  and dietary products and do not consume meat every day which is consistent with the Mediterranean type of diet. Therefore,  their mean Food Carbon Footprint is  2225 kgr,  lower by a thousand compared to the mean respective value of our region.
Their purchase carbon footprint is really low (mean value: 181 kgr) probably as a result of the economical crisis and also the environmentally friendly behavior of their  families.
Home carbon footprint is the one with the highest values. The mean value of the eight students is 5103 kgr compared to the 2317 kgr of our region. This is maybe due to the more frequent use of air-conditioning as the summer becomes hotter the last decade,  to the large number of incandescent bulbs in their homes and to the fact that they do not live in apartments but in houses therefore they need more fuel to heat them in winter. Changing of incandescent bulbs by led bulbs and exterior wall insulation may reduce their home carbon Footprint but these measures are unfortunately quite costly for the time being.
So, more or less I am satisfied with their results and I am trying to urge them to learn more about the green house effects, ocean acidification, climate change, etc. by reading some of the resources on I2 Sea website.
What about your results and your conclusions about your students?