Matt Price <moptop99@gmail.com> writes:

> In my gradesheets I use overlays to display the grade property in headlines
> -- that way I can see at a glance approximately how my students are doing:
>
> ;; still imperfect, but good enough for me.
> (defun org-grading-overlay-headings ()

Why don't you use column view instead?

> An unrelated simple question: if I make a sparse tree (e.g. by searching
> for all subtrees with a "GRADE" property of "0" or "FAIL",), can i
> un-sparsify hte buffer afterwards? I didn't immediately find that option in
> the manual.

See `org-reveal' or `org-cycle'.

Regards,

--
Nicolas Goaziou