Apparently, Broadway.com told the producers of 13, THE MUSICAL that while they'd continue to sell tickets to the Jason Robert Brown musical about tiny people with tiny problems, they would not market the show to teenagers or tell schools it was appropriate for students.
Some of my favorite shows have been: Mnemonic (Complicite), Long Days Journey Into Night, Debbie Does Dallas, The Elephant Vanishes (Complicite), Where Do We Live? (Vineyard), Cloudstreet (BAM) Uncle Vanya (BAM), Autoro Uoi (National Actors Theatre), I Am My Own Wife, Cymbeline (Theatre for a New Audience), The Chairs (Complicite), Orange Flower Water (Edge), Small Tragedy (Playwrights), Honor and the River (SPF), Spirit (Improbable), Goodnight Children Everywhere (Playwrights), The Play About The Baby, Radiant Baby (Public), Last Easter (MCC), The Lightning Field (Fringe), The Laramie Project (Tectonic), 4:48 Psychosis (St. Ann's), Thom Pain, Mother Courage (Public), Four (MTC), Nocturne (NYTW), Essential Self Defense (Playwrights), Blasted (Soho Rep)