Answer:
John is riding the glass escalator.
Step-by-step explanation:
Riding the glass escalator is a term that describes how men in a female-dominated work environment enjoy advantages that put them at higher positions because of gender.
In this question, John is working in female teachers dominated school. Although the women are more experienced than John, he is favourite to become the next principal of the school simply because he is a man.
In other words, John's likely promotion is not based on seniority systems or evaluation and assessment of performance. It is rather based on his male gender.