Possible Clues:

• Old boy's now out of bed, maybe, in darkness?
• Hid from new boss, almost better
• Good news about old boy that was poorly hidden
• Dead cursed vaguely without clarity
• Old pupils better out of sight
• Work's not started? Better to be hidden
• Confused old boy's made better
• Concealed from view, made indistinct
• Old boys restored to health but not on view
• Hidden somewhat