The Ruijin High School Entrance Exam typically attracts a significant number of students each year. Based on available data, the number of students participating in the exam can vary widely. In recent years, the number has ranged from several thousand to over ten thousand. This fluctuation is influenced by various factors, including the school's reputation, the quality of education offered, and the overall demand for high-quality secondary education in the region.

The high number of applicants is a testament to Ruijin High School's esteemed status within the educational community. The school is known for its rigorous academic standards, exceptional faculty, and strong alumni network. These factors contribute to the high demand for admission, leading to a competitive entrance exam process. According to the school's official statistics, the number of students who took the exam in the 2022-2023 academic year was approximately 8,500. This figure is indicative of the school's popularity and the intense competition faced by students seeking admission.

The fluctuation in the number of students can also be attributed to changes in the school's capacity and the broader educational landscape. For instance, if Ruijin High School expands its facilities or increases the number of available seats, the number of applicants may decrease. Conversely, if the school maintains a constant capacity, the number of applicants may remain stable or even increase due to rising demand for quality education.

Moreover, the economic and social factors in the region play a crucial role in shaping the number of students applying for the entrance exam. Families with higher educational aspirations are more likely to invest in their children's education, leading to a higher number of applicants. Additionally, the school's location and the availability of transportation can also influence the number of students from different areas seeking admission.

In conclusion, the number of students participating in the Ruijin High School Entrance Exam is influenced by a combination of factors, including the school's reputation, educational quality, and regional demand. The data from the 2022-2023 academic year indicates that approximately 8,500 students took the exam, reflecting the intense competition and high demand for admission to this prestigious institution.