Ethical decision-making should be included as a 21st century skill (overused term but don't know of an alternative). Some would profess that ethical decision-making has always been a needed skill.
Would the students have created a Facebook group rather than sneak off to a cave? Or would Mr. Keating have told the students to turn off all devices and leave them in their bags, maintaining the traditional classroom setting? I think it would be more of the former.
In the movie, students shouted quotes to music blasted from a record player while on the soccer field. They explored alternative learning spaces by walking the halls of the school. The students from Mr. Keating's class found relevance in their study of poetry because he taught them (3):