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.
Causes of bleeding in the kidneys. Bleeding from the kidneys occur when blood cells leak to urine. Following might be the causes: Infections in the urinary tract- such infections occur when bacteria and pathogens enter your body through the urethra and reproduce in the urinary bladder.