The objective of this research is to study the relationship between the economics of education and economic growth, taking into consideration the integration of modern technologies in strengthening this bond through a comparative study of Algeria, Saudi Arabia, and Singapore. In addition, it presents how education is related to sustainable economic development and the problems that countries face in associating education with economic growth. The results showed that education, particularly technical and vocational education, is important in stimulating economic growth. In Saudi Arabia, Vision 2030 has succeeded in associating education with economic development through providing more advanced educational opportunities that meet the labor market and workforce requirements, asserting modern technologies and digital education. However, the other countries cannot easily adopt all these needed modern technologies into their educational systems; for example, weak infrastructure and unavailability of the connection to the economic sector hinder Algeria. Another point is that Singapore presents a successful case in combining education and economic development with an advanced system of education that focuses on innovation and vocational training thus, it has made a positive impact on its knowledge-based economy. The research also noted the investment in educational infrastructure and the development of digital skills for learners and educators. More digital education should be promoted in support of sustainable development and to strengthen the integration between education and the economy. To sum up, the study stated that updating curricula and keeping up with modern technologies is one way to ensure quality education that will promote sustainable economic development.