Bitter cold of my class.

The cold winter has come these days.
A high school where I work started to use the air conditioning facility of heating this season.
To be honestly, I feel really chilly in the class.
I asked one teacher " What do you think of the temperature of the heating? It's not warm at all."
He answered " Yes, it's not set at a high degree in all of the class, because for saving electricity."
I took a temperature reading in my class. It was around 10 degree. Almost all of the students also say it is too cold.

I just have to do it at there. I always wear many clothes and put handy warmers on my body.
It was good oil heating, because I could get warm if I face the eating.