Training at PSA does not have a high failure rate. People that do not belong here fail out, that is true. The last statistics that I saw said that somewhere around 85% of the people that start training finish and end up flying on the line. Of the 15% that don't make it, only a small percentage of those are failures. Some people take other jobs, some quit all together, some lose their medicals, etc.
Right now, with more than half of the new hire classes at PSA being experienced 121 guys from other regionals, it is not uncommon for people to get hired at a major/lcc before they finish training.