This school year, more San Antonio districts are using a state-created curriculum known as Bluebonnet Learning. Who is using Bluebonnet reading? “The items in the [Bluebonnet] curriculum are historical context, so we’re not teaching religion but the historical context,” said Bustillos. Bluebonnet math is more popularWhile SAISD is new to using Bluebonnet reading materials, it adopted middle and high school math last year and used a curriculum called i-Ready for elementary schools. Northside ISD, San Antonio’s largest school district, is also using Bluebonnet math for K-5 math, Algebra I, Algebra II and geometry.