Question juridique clé
Whether the filing could be treated as a public-law appeal against the cantonal judgment.
Solution extraite
The wrongly named administrative-law appeal could be converted into a public-law appeal, but only to the extent the formal requirements were met.
Motifs extraits
The underlying decision was based on cantonal law and therefore not a federal public-law administrative decision; conversion was possible because the appellants alleged arbitrariness and unequal treatment and filed in time.