Pass rate of Shanxiang and Zhonggong exams

Hello, I would like to ask if the pass rate of Shanxiang and Zhonggong is high. Compared with Shanxiang, Shanxiang and Zhonggong have higher passing rates, with Shanxiang passing 85% in the public examination and Zhonggong passing only 30%. Zhonggong did play a lot of advertisements, but hardly saw the advertisements played by Shanxiang. In this way, the two families can be on an equal footing, indicating that Shanxiang also relies on strength and word of mouth. Zhonggong starts with civil servants. Shanxiang has been recruiting teachers in recent years. He also started from books and has been focusing on teacher training for more than 20 years.