HL maths!!

Pk9712

So im in higher level maths at the moment but i am not very good at it. I do need honours maths because I am currently doing pass level irish and really want at least 6 higher level subjects. I got 42 in the summers which i was quiet happy with as most failed in my class and i usually fail maths exams(my teacher even put good results in comments ). there are 2 higher level classes in the school atm im in the 2nd honours class so i'm not with all the really good maths people. last year when we came into 5th year we had a common test and they droped the lowest 30 scoring people to pass level. I remained in honours. But now i found out that we are having another common test!! and dropping another class:mad:. so I guess my question is can they actually drop me if i want to do higher level
I honestly do think I can pass the LC. 2nd question is how should I study for the exam its in a month i'm not good at maths and its on everything we did last year and through September should I skip the book and just do exam papers cause when i do that i cant do the questions i can attempt them get them wrong and look at the solutions is this how there suppose to be done??should I look at my book while i do them?My teacher isnt good so he isnt much help