This paper answers a question about national diagnostic and placement tests that measure students' strengths and weaknesses so that they can recognize their strengths and improve their weaknesses. Some schools and districts described using placement tests, however, for the most part, the names of the specific tests were not given. In states such as California and Florida, the tests that are used have been designed specifically to meet the given state's standards. There are numerous tests that are available for purchase. The school and/or district should determine what specific information they want and need from a test or tests, then investigate potential ones through the test publishers (Rudner, L. M., 1993). (Contains 16 online resources.)