Jefferson College Logo

Arnold Hours & General Info

Located on the first floor - Room #114
Phone: 636-481-3593 Email: jcatc@jeffco.edu


Students must present a valid photo ID in order to test at the Testing Center.

  • A valid photo ID for classroom/online/hybrid testing is a Jefferson College Student ID. (Due to 2-step verification, a STUDENT ID is MANDATORY.) Nursing Students taking ATI required to have both Student ID and State ID.
  • A valid photo ID (Driver's license, State ID, Passport, Military ID) is required for placement exams.
  • A valid ID for 3rd party testing will be reflected on the 3rd party testing platform's policies and procedures.

*Please note, if the College is closed for any reason, the Testing Centers will be closed.


Testing Center Hours:

Hours subject to change without notice. Please check the announcements or call the Testing Center at 636-481-3147.

  • Monday, Tuesday, Wednesday: 9:00-4:00 pm

  • Thursday, Friday, Saturday, and Sunday - CLOSED

Opening Week Hours, August 11 - 16, 2025

  • Monday August 11, 1:00 pm - 4:00 pm

  • Tuesday August 12, 10:00 am - 4:00 pm

  • Wednesday August 13, 9:00 am - 4:00 pm

  • Thursday, Friday and Saturday - CLOSED

2025 Holiday Closures:

  • September 1, Labor Day
  • November 11, Veteran's Day
  • November 26 - 30, Thanksgiving Holiday
  • December 22 - January 4, 2026, Winter Holiday