This study examines the values, trends, and variables that determine the public education expenditures of the Philippines from 1990 to 2019. The researchers used the following variables: Public Education, Culture, and Manpower Development Expenditure in Millions, Tax Revenue in % share GDP, Total Population in Millions, and Real Gross Domestic Product Per Capita, to pave the way for a coherent understanding of the determinants of public education expenditure and theories used to build up this economic construct. The study utilized a multivariate Ordinary Least Squares regression analysis needed for the variables, along with statistical measures to assess the significance of the model. Which includes the following: the values of the t-test and f-stat in their respective p valued forms for the significance of the economic model, tests for serial correlation through the Durbin-Watson test and Breusch-Godfrey test, a test for multicollinearity through Variance Inflation Factor, a test for heteroscedasticity through Goldfeld-Quandt test and White's Heteroscedasticity test, testing for specification errors will be done through Ramsey's RESET test, and test for normality will be through a graphical method Histogram. The key findings of this study suggest that the variables; economic growth, tax, and population growth show signs of positive relationship and negation with the dependent variable education expenditure.