[1] Prop 98, also called the "Classroom Instructional Improvement and Accountability Act," amended the California Constitution to mandate a minimum level of education spending based on three tests.
Test 2, used in years of strong economic growth, requires spending on education to equal the previous years spending plus per capita growth and student enrollment adjustment.
Test 3, used in years of weak economic growth guarantees prior years spending plus adjustment for enrollment growth, increases for any changes in per capita general fund revenues, and an increase by 0.5 percent in state general funds.
This is accomplished by shifting specified amounts of property tax revenues from cities, counties and special districts to "educational revenue augmentation funds" (ERAF) to support schools statewide.
[3] Proposition 98 has been attacked by some groups because it mandates "auto-pilot spending" and reduces the Legislature's budgetary flexibility.