Teacher's Thought!

Today my Junior One and Two students finished my exam. Tonight when I was grading their exam, it turned out bad grades. I thought I made the easiest test for them but.. no way. For them still difficult and some of them did not even answer some of the parts. I do not know what to do is the best for stduents to get higher grades. I am hopping that in the future, we will still make the easiest test and students will say, teacher you made the easiest test, since then, I iwll be happy.