In the yearbook from the 1947-1948 yearbook there is no photos or pages dedicated to cheerleaders. In the senior biographic summaries these students have "Cheerleader" listed from that school year which would suggest they had cheerleading that school year but it was not in the yearbook:
The following students had cheerleader listed in their biographic summaries from previous years:
In later yearbooks Arlene Richards, Harold Ward, and Irene Henary list Cheerleader during their 10th grade year which would have been this school year.
This suggests that there were 6 total cheerleaders that school year with 2 boys and 4 girls.