I’m not fully seeing the benefits of the GM rolling for this skill.
It’s similar to Comprehend skill, where if you fail the skill roll then the GM can give you false info. There is no need to hide the skill roll.
Moreover, because the skill roll is hidden, you have to just guess to push the roll or not, and you get no stunts if your roll two or more successes. This really decreases the skill’s value, and is a disincentive to selecting the Scholar character.
Maybe make the Enlighten skill more like the Datamine skill in Mech7, where Scholar characters can reveal extra info about subjects/objects?