N.S.
Before going to the school I would suggest a communication book or create a simple chart that the teacher could fill out at the end of the day and send home wit your son to let you know if he kept hands to himself and was not bothering Sally. If you create the form the teacher should be receptive to just checking off here and there. He can get a sticker at the end of the day if he follows directions and keeps his boundaries with Sally and other students (personal space). Then he can earn special rewards if he gets so many stickers in a week. They don't have to be toys I have used a special walk with ( or walk the dog) me or his father trip to museum or librairy to pick out movies or books or even a later bedtime on the weekend. My preschooler was a close in the face talker when he started school and most kids would push him away not only would he do this but he has a loud voice that carries so it was not taken well by the other students. I do alot of roleplay with my first grader and preschoolers around bulleying and appropriate versus inappropriate school behavior...they like to pretend to be the teacher and I act out in an exaggerated way the behaviors that should not be done at school ie the behaviors they have been getting into trouble with. You could pretend to be Sally and show him how to be "friends" with her. Give him tools to handle this rather than just punishing right off the bat. Try to find out what he likes about her in particular and remind him of his other friends in the classroom as well. I think if you replace the behavior with some possitive skills you are adressing the issues but also preparing him for relationships in the future. It is very important that as a growing boy he learns the social cues from others so he does not have future more serious issues with females or even the males in his class. If all else fails pretend to be him and hang all over him and stare at him all day and then talk about how that made him feel. I know my six year old and he is not a cuddler anymore so that would bother him very quickly.