“Simple possession” refers to the crime of possessing a controlled substance. It’s called “simple” to distinguish it from several other drug crimes related to the manufacturing and distribution of controlled substances. Possessing any amount of a controlled substance is sufficient evidence for a simple possession charge. These requirements, and the associated penalties, vary depending on the illegal substance in question. To classify the possession of drugs other than marijuana, Idaho uses the scheduling system. These schedules range from 1 to 6, with a schedule 1 possession charge being the most serious.