A panel of expert referees from the Philadelphia school district categorized items from secondary-level standardized mathematics tests according to National Assessment of Educational Progress (NAEP) subobjectives for mathematics. The following tests were covered by the study: (1) California Achievement Tests (Levels 19 and 20); (2) Comprehensive Tests of Basic Skills (Levels J and K); (3) Metropolitan Achievement Tests (Advanced 1 and 2); (4) SRA Survey of Basic Skills (Levels 36 and 37); and (5) Stanford Achievement Tests (Advanced, Task 1, and Task 2). Of these 11 tests, 7 appropriate tests were considered for each grade grouping (9, 10, 11, 12). Chi-square one-sample tests showed that these tests did not differ significantly in terms of the number of NAEP objectives or subobjectives addressed on a grade by grade basis. However, the proportion of NAEP objectives covered by the tests showed that the NAEP system is not being followed by publishers of standardized norm-referenced mathematics tests in the secondary school grades. All tests together addressed 82% of NAEP objectives and 48% of subobjectives, but no individual test covered more than 65% of NAEP objectives or 20% of subobjectives. All objectives and subobjectives addressed by these tests are reported in tables. (LPG)