The BLS does not have a separate category for assistant principals. According to Salary.com, as of March 2015, assistant principals in the 25th-75th percentile earned $69,591-$93,291 per year, with a median of $79,831.n order to become an assistant principal, your surest path is to accumulate teaching experience and then earn a master's degree in education leadership or education administration.
The last cause of green water in pool water is metals, usually copper, that have oxidized. Metals can be introduced through source water, from some cheap algaecides, or, if the water is acidic, from the metal components of the pool, most commonly from copper heater elements.
When people sweat, it reacts with the copper jewel resulting in the corrosion of copper and hence salt compounds are formed. The salt of copper is green in color which gets deposited on to the skin of that person. This would result in the formation of green patches, behind the neck of any person. Apart from the above two cases, the failure of certain organs within the body would sometimes result in the formation of green skin.