The practice of analyzing all available project children in as large a group as possible is considered not to be justifiable when distinct subgroups of pupils are represented. Instead, the approach suggested here determines the test score gain a pupil achieves from the beginning to the end of the year, with all of the pupil gain scores of a single compensatory teacher being compared to those presented in the Metropolitan Achievement Test (MAT) Gains Tables. These tables present typical gains that should be made on a particular subtest of the MAT, according to the grade level of the pupil and according to whether the pupil's pre-test achievement level is high, average or low. These tables differ from the norm tables provided in the test publisher's manual in that both the pre and post-test were administered to the same pupils to obtain the gain scores. The tables have two major limitations: (1) they are only useful for pupils' test results who are in grade levels 2-8; and, (2) the interval between testing is short. Implementation considerations and implementation procedures are included in the discussion. MAT Gains Tables are presented in this publication. (Author/AM)