Licensed Practical Nurse (Canada)?

For those of you who are LPN's or are studying to be LPN's... Did you like the Program? Did you find it hard? I have already taken Anatomy & Physiology as well as Microbiology when I studied to be a Medical Office istant. I ped with very good marks, however my high school Math/Chem & Bio are not very good at all... low 60's... For someone who struggles with these subjects how difficult would you say the program would be? Would you recommend upgrading regardless just in case? thanks.... i really want to take this program, the only thing thats stopping me is that i'm HORRFIED of math & chem!! thanks!