Harry taking potions class in for N.E.W.T.s with his new teacher professor Slughorn.

Harry is allowed to keep going in potions so he can become an auror in N.E.W.T.s. That means he will be better trained at defending himself and fighting against the dark arts. In order to become an auror you need to take potions and defense against the dark arts.  It is important that Harry becomes an auror because he will be will be trying to fight and defeat Lord Voldemort soon and he needs to be prepared for it.  This year Harry has a new potions teacher, professor Slughorn. Usually professor Snape teaches potions but Snape left potions to go teach defense against the dark arts which he has been longing to teach. Harry did not think he would be able to continue potions in N.E.W.T.s  because he did not get the acceptable grades to continue potions the year before in O.W.L.s. N.E.W.T.s happen in your 6th year.