Question juridique clé
Whether the subsidiary constitutional appeal was admissible despite no right to a residence permit for studies.
Solution extraite
No. Without a legally protected interest, the appellant lacked standing to invoke arbitrariness alone against the refusal of the permit.
Motifs extraits
Under Art. 115(b) LTF, the appellant must show a legally protected interest. The general ban on arbitrariness in Art. 9 Cst. does not, by itself, create such standing where no entitlement to the permit exists.