The ornamental design for a schoolbaghangingsystem, as shown and described.
FIG. 1 is a perspective view of the school bag hanging system;
FIG. 2 is a right side elevational view thereof shown enlarged, it being noted that the left side elevational view is a mirror image of the right side elevational view;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a sectional view thereof as taken along line 4-4 of FIG. 3 shown enlarged;
FIG. 5 is a top plan view thereof;
FIG. 6 is a bottom plan view thereof; and,
FIG. 7 is a rear elevational view thereof.
The broken lines represent environment only and form no part of the claim. The boundary lines represent a boundary of the claim.