A paper that spans levels
Because the difficulty range is inside the paper, there is no point studying "to SIELE B2". You will meet items above and below wherever you currently sit, and your score is the honest answer to where that is. That makes SIELE unusually well matched to level-adaptive practice, and unusually badly matched to cramming a single band’s vocabulary list.
Reading is the first of the four papers in SIELE Global, it is automatically marked, and its published share of the total is printed on this page with its source. Reading also appears inside the smaller S1 and S2 modality packages, so you can sit it without the full four papers.