One would need to impress the elders of the outer sect to earn performance points that way. The alternative is to take tests and perform well in them.
The test will not only reward with performance points but will also reward with better treatment, like an improvement in the accommodation of the disciples. This is how disciples can earn the ten spots above the floor of the S-grade disciples on the mountain.
Those 10 spots are just beneath the accommodation of the elder in charge of the mountain. So the energy concentration in the cultivation room of the ten houses will be second only to that of the elder's.
He discovered a lot of interesting information, such as the competition that is held every five years. This competition is not part of the performance tests. It is more of an opportunity for disciples to change their grades.