Seeking Resource to ID Pieces

[halimozart]

Hello,
I am an amateur pianist and am putting together my program for an upcoming event. I will be playing ARCT level pieces, but I'd like to add a few fun, light, classical pieces and am trying to find a database or resource that can tell me what level my pieces are. Is there such a thing available online? The piece I am doing is Mozart piano sonatine I in C Major (k438b). Does anyone know what level this piece is?
Thank you!
Allie