Before you register for the HSK, it helps to know exactly what the paper looks like: how many sections, how long, how many questions, and what score clears the bar. Here is the full breakdown.
The sections
Every HSK level tests listening and reading. From HSK 3 upward, a writing section is added. HSK 1 and HSK 2 have no writing. Speaking is never part of the HSK — it is a separate exam, the HSKK.