One of the greatest problems in the senior secondary schools in Nigeria is that teachers after assuming to have
covered the Senior Secondary Certificate Examination (SSCE) Economics curriculum would resort to assessing
senior secondary three (SSS III) students with unreliable Economics Achievement Tests on SSCE curriculum often
administered during schools’ mock examination. This is usually the last test for SS III students before they sit for the
Senior Secondary Certificate Examination. Most teachers hurriedly copy questions from any past question paper to
compose their summative achievement tests. As a result, teachers do not establish validity and reliability for such
tests.