Slice of life at a Catholic girl's high-school, centred on the doings of the student council, with the highest drama being about matters of etiquette, in the main — the girl who seems to be dating too many different men (who turn out to be her brothers); or the one who is found to have a set of Buddhist prayer beads, rather than a rosary (like fibbing to get into a church school here). No magic, no martial arts, no fan-service, save the occasional shoulder or ankle, or sisterly hug.
In contrast with the hyper-kinetic action of other titles, this is quite calm, and about the people, and, in the second series, the matters of succession, as the third-years graduate, and everyone else moves up one place in the council hierarchy.
This is definitely a series that deserves its high reputation. It's also one that on the face of it doesn't sound like my sort of thing at all, but just sort of clicked.