In the last 20 years, the education system in Türkiye has witnessed massive growth and transformation from primary- and secondary education to higher education. Significant improvements have been made in enrollment rates at all levels of education, reaching a level comparable to OECD countries. In this context, this study focuses on the transformation and massification of higher education in Türkiye. The net enrollment ratio in higher education in Türkiye has increased from 10% to 46% during this period. Especially, the establishment of higher education institutions in all cities has contributed positively to women's access to higher education, and for the first time, the enrollment and graduation rates of women have surpassed those of men. The increase in the supply of higher education and easier access has raised the proportion of higher education graduates from under 20% to over 40% in the 25-34 age group during this period. At the same time, the average length of education for the population aged 15 and over is increasing every year. Additionally, this study identifies problem areas and proposes solutions to ensure the sustainability of the expansion in higher education during this period. The evaluation identifies insufficient face-to-face teaching capacity in the higher education system and attempts to compensate for this deficiency with distance education programs as the primary problem area. Especially since 2015, almost half of the students who have enrolled in higher education have been able to enroll in distance education programs. Therefore, increasing face-to-face teaching capacity in higher education and reducing the proportion of distance education in higher education stand out as challenging issues. The second problem area is highlighted as being related to the limitations in scientific knowledge production performance of higher education institutions and the number of doctoral graduates. Despite an increase in the number of doctoral graduates from all disciplines every year, sustaining the growth achieved during this period is highly inadequate. This problem not only negatively affects the capacity for scientific knowledge production but also creates significant challenges, especially in meeting the need for faculty members in newly established universities, thus adversely affecting the quality of higher education. The study also offers some recommendations for addressing these problems.