Sleep deprived

I agree with these surveys. Every day I get up and I am more and more tired. I get into school and sit in my classes. The teachers are talking and I am listening but i can't take I. Half the stuff they say because I don't have the energy to take it all in. This is bringing my grades down because on the test there is a lot of content I did not remember learning when I don't get sleep I am a mess.