Can we say
Shall he/she attend?
Is it possible to make a question with shall?
I think that today it is more common to use will to make a question about the future. (Parrott's book cited below states this).
Shall he /she attend? is ok but Will he attend? is more common.
EDIT We can use shall with other pronouns and names and with other appropriate verbs. Some more examples are shown below:
Shall I/she/he/we/they/It/John/ attend/go/come/arrive?
Shall ,a modal auxiliary verb, is more commonly used in the following ways:
1. To offer your help.
e.g. Shall I open the door for you?
2.When making a suggestion.
e.g. Shall we go out for lunch together?
3.Asking for instructions
e.g. What shall we do now?
Source: Practical English usage by Michael Swan & Grammar for English Language Teachers. By Martin Parrott.
Shall he attend? to me sounds very old-fashioned and formal, and means something like "Is it your intention that he should attend?" It's not just about a future event, but about somebody's intention for the future.
On the other hand, Shall I attend? is perfectly normal to me, but it is asking for permission or guidance, not for a prediction.
Edit: Some English dialects don't use shall at all; some (like mine, from England) use shall freely for first person subjects ("I" and "we"). For other persons, it is rare, and usually carries a sense of command or permission.