Hypernym for "boys only", "girls only", and "co-ed"

What word would be used on a form where one is asked to stipulate if a school accepts only boys, girls or is co-ed?

We are creating the form, and the word I am looking for would be used for a drop down that has the three options "boys only", "girls only", "co-ed".

Co-education (and co-ed) is the term used to highlight a system which is now considered the norm for education. Since this is a questionnaire, you have the option of using one-word questions.

Coeducational?

• Yes
• No — boys only
• No — girls only

You could use one of the following phrases

• Enrollment Gender
• Student Gender
• Student Body Gender
• Student Gender(s)
• Student Body Gender(s)

How about "School demographic" or "Gender demographic"?

I can't think of a term like that, if one exists, but you could use something like "Student Body" or "Student Population" or maybe "School Classification".

If you want to sound more formal, I think the commonly accepted terms for the three classifications are "All-boys", "All-girls", and "Co-educational".

I would suggest the use of the word environment. If it is too broad, you could narrow it down further to something along the lines of school environment, educational environment, and so on.