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.
UTI left untreated for weeks after the incidence of primary symptoms, causes the bacteria colonizing the bladder to move upwards, infecting the ureters. This leads to accumulation of urine in the ureters as well. When ureters are not completely emptied of urine, there is swelling and intense pain.