Be sure to fire ceramic bisque high enough to eliminate any chance of the fired piece absorbing moisture. Moisture absorbed after the piece has been glazed will cause it to expand and crack the glazed surface, which is called crazing.
Fire bisque at least one cone hotter than glaze and even more if glaze can be applied easily.
Glazed ware and bisque ware should not be fired together unless both mature at the same cone. Even then, be sure that the glaze is loaded in the bottom of the kiln.