If you described your school principal as "omniscient," what would you probably mean?

it would mean that the principal knows everything.

Explanation:

the adjective omniscient is used to describe an all-knowing being. so if u used that word to describe the school principalm it would mean he has infinite knowledge. he knows everything, even what you do in the school bathrooms.

if your school principle is omniscient, i'd be careful.

She's all-knowing, she knows everything