Taxability of Purchases for Schools and Universities

Do all states offer exemptions to schools? Andy and Dan dive into exemptions for schools when they purchase items. They also make it less confusing for you that have schools as customers so you know whether you should charge them sales tax. Questions: What states don't have exemptions for schools? Do I have to collect exemption certificates from schools and universities? Are there different exemption rules for public and private schools? How is the taxability of donations to schools handled? Why do some states treat private and public schools with taxability? Are purchases from public and private school exempt in the state of Minnesota?