Lead responsibly implies the ability to think critically (and to do so before acting), solve problems, and act with empathy and humility.
Celebrate diversity goes beyond mere tolerance of, and even respect for diversity and difference, and sees these as an opportunity for further learning, not as a problem to overcome.
Integrity indicates the quality of being honest and of always acting in a principled manner.
Just and more peaceful are self-explanatory – but “just” brings into the desired student outcomes a concern for fairness, non-discrimination, and human rights.