How do I solve 18 down in Daily Telegraph Cryptic 31253?

Question

Accepted Answer

18 down reads "Where one goes after class tracked location?" (8 letters); the answer is WATERLOO. It's a charade: the answer breaks into parts in clue order, each part clued by a word or short phrase. No indicators needed; watch for standard abbreviations (RA = artist, US = American, IN = at home) and short synonyms. The full step-by-step breakdown is on this page.

Where one goes after class tracked location? (8)

18D — Where one goes after class tracked location? (8) — WATERLOO