Free USPS 955 Exam Flashcards

The minimum passing score is 70 on a 0-100 scale, but each craft (Electronic Technician, Building Equipment Mechanic, MPE Mechanic, Maintenance Mechanic, Area Maintenance Technician) uses a different weighted scoring formula that emphasizes the skills most relevant to that job. USPS does not publish an overall pass rate. Because hiring is rank-based from an eligibility register, competitive scores are typically 85 or higher.

The 955 has 180 total items across two parts. Part 1, the Personal Characteristics & Experience Inventory, has about 120 statements answered at home in 75 minutes. Part 2 is a proctored multicraft plus spatial-reasoning test of 60 questions in about 60 minutes at a PSI testing center. Combined seat time is roughly 2 hours 15 minutes.

The 60-question multicraft block draws from electronics (logic gates, diodes, transistors, op-amps), electrical fundamentals (Ohm's Law, power formulas, series/parallel circuits, AC/DC, three-phase), mechanical systems (gears, levers, mechanical advantage, hydraulics, pneumatics), HVAC/refrigeration, computers and networking, math reasoning, spatial reasoning, and workplace safety (LOTO, arc flash, SDS, PPE).

Yes. USPS does not charge an application or exam fee for the 955, and PSI testing-center costs for Part 2 are covered by USPS. Candidates pay nothing out of pocket to test.

Yes, but you generally must wait about 6 to 12 months and reapply for a new open vacancy announcement to be re-invited to test for the same craft. There is no separate escalating penalty tied to a specific number of failed attempts — the wait is governed by vacancy timing rather than a fixed retest count.

A passing score places you on a craft-specific eligibility register for approximately 2 years. USPS hires from the top of the register as vacancies open, so a higher score improves your odds of being reached before your register placement expires.