After his predecessor departed last month to take a position as superintendent in Camden, the local school system in Vineland appointed a former high school principal as its interim superintendent.The term of Thomas P. McCann began on March 1 and will last through June, when the school year ends.His contract, which was authorized in February, states that he will receive $650 each day, totaling $49,400, with no further pay or perks.The board is still looking for a permanent superintendent in the meantime.