Bookbags and highlighters were a sign of spiritual depth when I was in, for sure.
If I got this advice, I would be tempted to go Superfine Turbo 1970sjw. Do this, approach the elders, and say, "Better now?"
For men--polyester, wide lapeled suit, wide tie, highwater hem, oxfords, vest, coat buttoned all the way up, watchtower tie tack, glasses with masking tape holding them together, pulled together with an enormous bookbag. Hair must be parted on the side, sideburns must be present but not be longer than the earlobe, no beard or mustache.
For women--thick pantyhose, low-heeled pumps, a-line skirt with a mid-calf or lower hemline, half slip, camisole under your polyester blouse (which is buttoned up One Extra Button So You Don't Stumble the Brothers), modest haircut, little makeup, Stepford Wives vacant smile, lady-sized bookbag with a slew of highlighters, earmarked magazines with underlining. If you have kids, include a wooden spoon or ruler for spanking.