I've been practicing with the Arco/Peterson's study guide for the ACT....and I've been consistently getting around a 26 in English (the grammar section). I got a 26 on that same section three years ago, in eighth grade. I took the SAT and got a 790 in writing (80 on MC). I got in the high 70s on the PSAT. My question is, is the Arco/Peterson's ACT much harder than the actual one? If it isn't, any idea what is going on? Help!