141 schools can either do internal checkrides with specially designated and certified instructors (usually CP's) or farm out the actual checkride to a DPE or Fed. Not all 141 schools are allowed to do internal checkrides.
Technically, even if a DPE/Fed does the ride it is still a 141 End of Course check and should not result in a pink slip.
The only time a 141 student should get a pink slip is if the conscious decision is made to terminate 141 training and take the checkride part 61. This is a common sense approach when the student has achieved proficiency (usually due to previous non-141 training) but would still need many more hours to complete the 141 syllabus (which is required to take a 141 EOC check).