READ THIS FIRST... YES REALLY READ THIS!
Tests and measuring instruments are an important part of research and practice in the social and behavioral sciences. These psychological and educational tests and measuring instruments are:
(1) either commercially produced and must be purchased through a publisher (often very expensive, sometimes requiring training/certification in administering it at a cost)
(2) or they are published in journal literature but are considered "unpublished" in the sense that you don't have to go through a publisher to get them.
Your BEST BETS listed on this page for full text of tests/measures are: PsycTESTS database, the book Measures for Clinical Practice & Research, Googling or searching databases relevant to your subject areas for full text of tests/measures, or sometimes even writing the test creator asking permission to use their work for your undergraduate or graduate research.
Searching Social Work, Sociology, Psychology, Education, and other databases for journal articles containing tests/measures is also recommended.
Measures for Clinical Practice and Research by 
The Mental Measurements Yearbook by 
Handbook of Psychiatric Measures by 
Tests: a comprehensive reference for assessments in psychology, education, and business by