As per the DEA website, Schedule I drugs are "substances, or chemicals are defined as drugs with no currently accepted medical use and a high potential for abuse. Schedule I drugs are the most dangerous drugs of all the drug schedules with potentially severe psychological or physical dependence."
The CDC also backs up the fact that alcohol is more fatal than marijuana, lsd, peyote, etc. They have stated "Drinking too much can harm your health. Excessive alcohol use led to approximately 88,000 deaths and 2.5 million years of potential life lost (YPLL) each year in the United States from 2006 – 2010, shortening the lives of those who died by an average of 30 years.1,2 Further, excessive drinking was responsible for 1 in 10 deaths among working-age adults aged 20-64 years."