Not sure why but while using the open-for-all web editor and setting the pass threshold at 55% shows during the test as follows:  However, exporting the source exam file and inspecting, the value seems to be correct... 
Not sure why but while using the open-for-all web editor and setting the pass threshold at 55% shows during the test as follows:
However, exporting the source exam file and inspecting, the value seems to be correct...