AACE CST

It is a multiple-choice examination. The number of items, the time allowance and the passing score are not published in the material available when this guide was written, so confirm them directly on AACE's CST Details page under Technician Certifications before you schedule a test date.

It sits at technician level, below the professional certifications, so the difficulty is breadth and precision rather than deep theory. Candidates who can explain critical path logic, float behaviour, calendars and progress updating without notes generally find the material manageable; those who have only used scheduling software mechanically often struggle.

AACE publishes separate pages covering certification FAQs and examination delivery, and retake rules sit there rather than in generic scheduling guides. Because the CST detail page could not be retrieved, the exact waiting period and fee for a retake are unverified; check AACE's Certification FAQs and Examination Delivery pages before assuming a timeline.

There is no official preparation period. A practical plan is eight to twelve weeks of steady study: terminology and logic fundamentals first, then schedule development and updating, then analysis and reporting. Reserve the final two weeks for timed practice and for reviewing the schedule errors you consistently miss.

Start with project controls fundamentals so cost, scope and schedule terminology are familiar. Move to schedule planning and development, where logic, durations, calendars and baselines are set. Then take maintenance and control, then analysis and reporting. The later areas assume you already understand how a schedule is constructed and updated.

Common failure modes are misreading float ownership and total versus free float, mishandling calendars and non-work periods, ignoring constraints and open-ended logic, and confusing a data date with a status date. Progress updating with out-of-sequence work and variance reporting on earned schedule concepts also trip up first-time candidates.

AACE maintains recertification pages covering renewal by continuing education units and by re-examination. The specific validity period that applies to the CST credential could not be confirmed from the retrieved source, so verify the current cycle on AACE's Recertification pages rather than relying on a remembered figure.

AACE lists the CST under Technician Certifications and the PSP under Professional Certifications. The technician credential targets practitioners newer to scheduling who want to validate core competence; the professional credential assumes broader, deeper experience and covers schedule risk, forensic and program-level analysis at a more demanding level.

Eligibility requirements for the CST were not retrievable, since the detail page returned an error during research. AACE handles applications through its Creating a Certification Application guidance. Review that page and the CST Details page before applying so you are not caught short by documentation or experience thresholds.