However, I would like to mention that I have an offer from XYZ School. The annual compensation package offered by them is higher by $5000 than yours. Before approving their offer, I would like to reiterate my interest in your school, and would love to see a revision accordingly in the annual compensation package.
As already conveyed during the interview about my dedication and passion for teaching, I would love to meet you again and converse on the salary issue in person. Please call me and let me know when it is possible for us to meet.