From my personal view, the principal of a school is responsible for creating a positive school culture, and is the one person who can make or break it.
Principals should push to make sure their schools are exceptional by encompassing these characteristics:
Positive and uplifting leadership
It is the obligation of a school’s principal to be enlivened, inspired, and committed in the spirit and the demeanor of everyone in the school. Your example will set the tone for everyone else around you. Make sure to communicate and display good values and respectable behavior. The faculty will definitely notice your behavior and feel compelled to mimic it. Then the students will be more likely to follow and adopt that same behavior as their own.
Establishing mutual respect is key to opening all doors—conversation, understanding, discipline, etc.—with your teachers, counselors, students, and parents.
Make sure everyone feels included
Acknowledge work that is done well. Get to know those around you. They are all a part of your team. Everyone will work best together when they all feel like they have a role.
Making a School a Safe Space
A school should be a safe space for everyone. It is up to the principal to set the tone for creating that safe feeling. Students should feel that they can come to the principal with any problems they might have. And, expect a compassionate adult who is actively listening and working with them to find a solution.
Principals should also encourage teachers to contribute new ideas to make the school better and, overall, model what the best choices are.
Principals should set the bar for everyone in your school community regarding how to act, how to speak, how to regard others, and how to lead. It is your job to help everyone become the best version of themselves. A positive school culture may only be an aspiration or idea, but do your best to implement it in your school. Turn it from an idea into a practice. And then, principals, make it the principle.