Wiktionary
a. worse than average, with regard to scholastic performance if unspecified.
Usage examples of "below average".
He was below average in height, and far smaller than the colourful and uniformed giant who stood beside him.
Yet she had the feeling that at least half these people were below average.
The rainfall was below average and he was not going to make much more than nine bushels to the acre.
He had brown hair and beard, he was a little below average height, he was well-muscled, he wore the typical clothes of a turn-of-the-century student Externally, then, he conformed.
The arguments that many a famous man had been well below average height and that it wasnt a mans height that mattered, it was what he had in his heart, fell upon very deaf ears.
First, I want to explain something about, uh, people who are below average in stature.
It was the regular Gottschalk technique: select an area where sales were below average, saturate it with rumors until someone's temper reached the breakpoint and the inevitable division occurred into blank and kneeblank, and then the following day take adof people's frayed nerves to sell guns, grenades and mines.
Slightly below average in height, dull brown hair and eyes, slender to the point of skinniness-even the silks and jewels he wore did nothing to disguise his complete lack of musculature and clumsy movements.
He had gone abruptly from slightly below average male height to slightly above it.