having class

[Tinkerbell]

At a normal high school, having class outside on a gorgeous May day is usually pretty awesome. It means sit­ting in the sunshine, maybe reading some poetry, letting the breeze blow through your hair . . . .

studying lesson with students and a teacher in the school's garden? or studying on one's own?

[Tdol]

If it's a class, then I'd go for the teacher + students.