On Jan. 1, 2014, Colorado became the first U.S. state to allow legal recreational marijuana sales. It was sold to voters as a way to fix up crumbling schools, but that’s only the start of where the hundreds of millions of tax dollars has gone, according to Denver Post reporting.

Since 2014, a lot of money has been spent on the green stuff, but where does all the marijuana tax money go? These videos explain the two state taxes on retail marijuana in Colorado. A 15-percent excise tax that wholesale marijuana buyers pay and a 15 percent sales tax that consumers pay on retail marijuana.

The first video looks into the excise tax.

The second video looks into the sales tax.

Videos by Amy Brothers, The Denver Post.