First of all, it shows that teacher establishment and teacher title are different concepts. Teachers are also called in-service teachers, and those who are not in-service are called supernumerary teachers.
As mentioned at the beginning, the meaning of teacher establishment belongs to the nature of public institutions. The treatment of non-teacher establishment and teacher establishment is very different.
Secondly, is there a relationship between teacher establishment and teacher title evaluation? Can't you evaluate titles without preparation? In principle, there is no relationship between the two, and non-teacher establishment can also evaluate teachers' titles.
But every school will consider the number of places when evaluating professional titles! Therefore, it is good to say that the number of places is not tight when evaluating, otherwise supernumerary personnel are rarely considered, which means it is difficult for supernumerary teachers to evaluate professional titles.