Assistant principals aid the principal in the overall administration of the school. Some assistant principals hold this position for several years to prepare for advancement to principal jobs; others are career assistant principals.n larger school systems, a principal is often assisted by someone known as a vice-principal (Republic of Ireland: deputy principal) or assistant principal.
Causes. Pressure on the bladder during delivery is the main cause of a ruptured bladder, although a weakness in the bladder wall may make it susceptible to a rupture. In older horses, a ruptured bladder may be caused by an accident or related to a urinary obstruction.
Overflow incontinence: People who suffer from overflow incontinence experience periodic urine leakage. Urine leaks out of a bladder that is distended and overfilled. In men, prostate enlargement and prostate cancer can block the bladder outlet and make the bladder distended and leaky. Scar tissue from prostate surgery sometimes narrows the urethra or bladder neck and causes overflow incontinence. Nerve damage caused by a spinal cord injury, an illness, or a medication can also contribute to this form of urinary incontinence.