The goal is the search: an exam, a job interview, a move abroad. A page per goal, with level, duration and what the class actually looks like, reaches someone with a deadline rather than a vague intention.
Two peaks carry the year — September and January — and both are decided weeks earlier. Content published in July and November is what fills those groups; published in September it argues with a decision already taken.
Online and in-person are two products with two prices. The person who wants a class near the office and the one who wants a tutor at nine at night are not the same buyer, and one page serves neither.