1988 ACT — Mathematics Preliminary Norms Raw QII Percentile 40 153 99.98 39 151 99.97 38 149 99.95 37 148 99.93 36 146 99.9 35 144 99.8 34 142 99.7 33 140 99.6 32 138 99.4 31 136 99.2 30 134 98.8 29 133 98.6 28 131 98.1 27 129 97.3 26 127 96.4 25 125 95.2 24 123 93.7 23 121 91.9 22 119 89.7 21 118 88.4 20 116 85.7 19 114 82.5 18 112 78.8 17 110 74.8 16 108 70.3 15 106 65.5 14 104 60.5 13 103 57.9 12 101 52.7 Raw IQ Percentile 11 99 47.3 10 97 42.1 9 95 36.9 8 93 32.0