Re: jealous wife is cramping my teaching style
I'd say give up your wife if this level of immaturity persists.
Your wife is not jealous of this new girl. This new girl is just the focus of a much deeper problem.
Trust is the cornerstone of any successful relationship. If, as you say, you haven't given her reason to distrust you then she is by nature a distrusting person and will never trust you. Not a good situation for you to be in.
If, however, you HAVE given her reason to distrust you then you've brought all this on yourself.
I don't think it's fair or healthy for one person in a relationship to give up everything to keep the other person happy. The only thing that is learned from this is that anytime she wants you to do something or change something she only has to bring out "The Jealous Wife" and you'll bend and break and do anything to appease her.