How to explain the significance of variables in an Oaxaca Blinder decomposition

[Romuald Landry]

I break down the reading and math scores between public and private.
using the Oaxaca Blinder decomposition
I have a problem I can't interpret the effect of the variables on the explained and unexplained part

this is the command that i use

oaxaca moyengen sexedeelv aimerma1h mater0elle red1ublemt ses agedeélève genremaitre àgemaitre Expérience absence2derniermois nbredinspection Nbelvdanslécole localisation typeécole indice_infrastructures, by( oaxacatypeecole ) pooled detail