The Reddit thread captures a common decision point in the modern flight training pipeline: a student pilot preparing for the Instrument Rating Airplane (IRA) checkride, already scoring 97 and 100 on Sheppard Air practice exams, questioning whether to also purchase Sheppard's add-on products for the Flight Instructor Instrument (FII) and Instrument Ground Instructor (IGI) knowledge tests before the instrument checkride is even complete. The specific friction point—an instructor or school withholding sale of those add-ons until the IRA is passed—reflects a fairly standard, if occasionally irritating, business practice among CFIIs who want students to demonstrate competency on one certificate before advancing to instructor-level material, rather than banking multiple written exams in a single study cycle purely for efficiency.
For working pilots and flight instructors, this thread is a small window into the well-known and still-debated role of "guaranteed pass" test prep services like Sheppard Air, King Schools, and Sportys in FAA knowledge testing. These products are near-ubiquitous in part 61 and part 141 training because the FAA's knowledge test question banks have historically leaked into public test-prep databases, allowing services to essentially train students to recognize and answer specific question-answer pairs rather than teach underlying aeronautical concepts. This approach reliably produces high written test scores, as the poster's 97/100 results demonstrate, but it has long drawn criticism from CFIs, DPEs, and the FAA itself for producing pilots and instructors who can pass a computer-based test without necessarily internalizing the material—material they will later be expected to teach to their own students if they pursue CFII or ground instructor privileges. The FAA has periodically responded by overhauling test banks (as it did with the 2019 ACS-aligned Airman Certification Standards knowledge test revisions) specifically to disrupt rote-memorization test prep, though services like Sheppard have generally adapted quickly.
The underlying certificates in question—CFII and IGI—matter more broadly because they sit at the center of the current flight instructor pipeline that feeds regional and legacy airline hiring. With Part 121 carriers still working through elevated attrition and pilot demand driven by retirements and growth, the traditional time-building path of earning CFI, then CFII, then MEI to instruct full-time before moving to a 135 or 121 seat remains one of the most common routes into professional aviation. Instrument ground and flight instructor certificates are typically pursued in rapid succession immediately after private pilots finish their own CFI training, which is why the poster is thinking ahead to FII/IGI even before finishing an unrelated instrument rating checkride—efficiency in stacking certificates has real value when flight schools and future employers want instructors turning out students quickly.
More broadly, the episode underscores an ongoing tension in flight training between speed and depth. Flight schools operating at high throughput, often tied to airline-partnership pipeline programs, have strong incentives to move students through written and practical tests as fast as possible, while individual instructors like the one in this thread sometimes push back to enforce sequencing that better reflects genuine skill progression. Pilots and training providers navigating this tension should recognize that written exam scores, whether from Sheppard Air or any other prep service, are a poor proxy for actual instructional competency—a distinction that becomes especially important once a newly minted CFII is standing in front of an instrument student who is trusting them to actually understand approach procedures, not just recall which multiple-choice answer the FAA prefers.