Article 14 (prohibition of discrimination) and "socioeconomic" status in my moot

Does Article 14 ECHR cover socioeconomic status? I've been looking for case law regarding this, but I haven't found any, which tells me either: I'm not looking hard enough, there isn't any because it isn't covered, or there isn't any because the claim has never been made but it could be successfully made in the future.

I have a moot defending the state against an Article 2, Protocol 1 claim (the right to education) coming up and this is a pretty big part of it.

Essentially, I'm asking if there's any ECHR (or domestic) authority determining if socioeconomic status is one of the "other statuses" covered in Article 14. If there's anything saying it isn't that could also be quite helpful. Thank you!