This Technical Report provides descriptions and summary data that assist measurement specialists in assessing the procedures used in developing New Jersey's High School Proficiency Test (HSPT), the technical qualities of the tests, and the statewide results obtained from its use. The data summarized in this report were collected during the various phases of development of the third annual form of the New Jersey High School Proficiency Test (HSPT) during the 1985-86 school year. The HSPT is administered annually to all public school students in grade nine and constitutes a requirement for high school graduation. The three major data collection phases were Item Development and Review, Field Testing, and HSPT results. The first three sections of this report are organized according to these three phases. The fourth section describes the equating process used to link the HSPT back to the first administration of the test in 1984. The final section discusses the development and administration of the essay test, as well as the procedures for deriving the total writing test score. (KSA)