Is it a good way to recruit students through sales in private high schools?

It is not easy for private high schools to recruit students through sales. The work of telemarketing is hard. Whether it is telemarketing or customer service, you have to sit in front of the phone for a long time. Busy work, the quality of the people recruited by telemarketing in private ordinary high schools is uneven, which leads to a large turnover of people, so it is not easy for telemarketing in private ordinary high schools to recruit students.