hit-or-miss

Teachers were supposed to have special training, as any special-ed teacher would, but it seemed hit-or-miss.

The plot's busy, the visual effects hit-or-miss and its villains are neither potent nor memorable.

The Niners have been a hit-or-miss team the past two decades.

NFL drafts can be hit-or-miss, but getting it right often pays immediate dividends.

Harris: Both clubs are similar, with talented rotations backed up by hit-or-miss offenses.