Bowling was an elective PE class in Columbine, apparently geared towards students who weren't interested in PE classes involving lots of running or contact sports. PE wasn't a class where your grade went towards your gpa - it may well have been a pass/fail class. It might have been necessary to pass PE in order to graduate. The bowling in question took place in a bowling alley iirc.
You are not being 'educated' if you are not participating in classes to your fullest ability. Sitting in class disrupting the work of others is not education. Dragging yourself around a track or doing the least possible in team sports or swimming is teaching you nothing about challenging yourself, or fitness, or self discipline. It just encourages immature, attention-seeking, fear-of-trying behaviour. At least the students from Columbine who participated in bowling were up and dressed and out of their homes for a 7am start. There were more students participating than the two killers, and many of them I presume went on to lead productive lives.
The lesson to be taken from the availability of bowling at 7am as a PE elective is that US high schools try to provide some version of required courses that will suit everyone. DS took a course on War and Literature instead of a course that featured lots of Jane Austen. The reason to provide alternatives is to minimise the potential for disruption in classes and make sure everyone actually works productively, as opposed to what is often the case in British schools where there is a hierarchy of courses and the students who have been turned off by literature or who don't read well enough to follow Dickensian sentences down the length of a page understand very well that they are the bottom of the barrel and behave as such.
In many schools you have to pass the PE requirement in order to graduate. In my DCs' high school students take PE every day for four years, with one of the eight semesters taken up by drivers' ed. If for some reason you fail PE in any semester you have to retake it. The options for a retake include early morning or after school classes, and you would then be taking two PE classes daily for at least one semester. Early morning would involve a 7am start as classes begin at 8. If you fail drivers' ed then you have to take it in summer school or privately and you must have a state licence to show in order to graduate.
If you fail any other core course in any semester you also have to retake it. Retakes are offered in summer school, which you pay for. The cost in my DCs' high school is about $200 per summer school course taken. This means that students are not allowed to fail their way through four years of school and emerge at the other end having wasted their own and everyone else's time. Maybe something worth considering for British schools...
Summer school also allows students interested in advancing quickly through a maths track to do so. DD3 did summer school maths for two summers and joined a track that was two levels up from her original track in her second year. Are British students able to plough ahead like that if they want to?
It is always a shame to turn up one's nose at something one really doesn't seem to understand and to refuse to believe there is anything in the educational approach of the US that could be useful to Britain just out of sheer small-minded disdain.