The teacher won't force him to go on the potty, but she will start to get him used to the toilet first, still changing his diapers. She will know the readiness signs and start appropriately, and let you know when she thinks it is time to start at home.
Don't stress too much about it. he will tell you when he is ready, by saying pee-pee, poo-poo, go potty, or he will pull pants down, or pinch down there and say something.
I have a very difficult tot, he is almost 3 and I have not started with him yet. I don't think he is ready.
But yes, put the potty in sight, even if it is near his toys. Show him what it is for, you can use a teddy or a toy.
reward him if he shows you on his own that he needs the potty.
watch for readiness and be patient. And most of all have fun and make a game out of it. You can use sprinkles in the toilet, flush and make a tornado gesture and say WOOOOSHHHHH! All gone!! Kids love color.. have fun with it.