Student or Learner
I know that
"I am about to go."
"I am supposed to go." are correct.
But how about this? "I am to go."; which means I am going to go. I remember one of my teacher taught me that but later I think I heard that it was wrong which I am not certain about.
Please, give your opinions.
I am to go can have the idea of I have been instructed to go or I am scheduled to go.