The relationship between teacher and students can be similar as that between parents and children.There is no pattern to follow.However,it is widely agreed that besides setting a image of knowledge and authority,the teacher should also take the role in a friendship with the students.Respect is the key in both teaching and friendship.If one can consider the need of the other,the other will respond the same way in return.Then there is trust and willingness to continue this relationship from both sides.By the way,I think it is the same with the relationship between parents and children.
Hope this would be of some use to you.Have a nice day!