Education is an indispensable public service for the country's development. In order to have access to quality education, more must be invested, especially in basic education, since it is the basis for educational development; however, not as much is invested compared to other OECD countries. In recent years, the basic education budget as a percentage of GDP has shown a downward trend from 2.3% to 1.9%. Similarly, in the results of the last PISA test, Mexicans were positioned below the average, reflecting low performance compared to the OECD average. The objective of this research is to analyze whether public spending on basic education in Mexico has an impact on the quality of education at this level, measured in terms of the PISA test. It is also based on the trend method to analyze variations in spending. This contributes to the fact that due to the decreasing trend of the indicators, the competent authorities in Mexico design new policies that meet the needs of the new generations and lead to an increase in the performance of young Mexicans and increase the degree of educational quality in basic education.