Question juridique clé
Whether the filing could be treated as a constitutional complaint despite no entitlement to a residence permit for studies.
Solution extraite
The filing had to be treated as a subsidiary constitutional complaint because neither international law nor Art. 27 LEtr gave the applicant a right to the permit.
Motifs extraits
A public-law appeal was excluded under Art. 83 let. c ch. 2 LTF where no enforceable right exists.