Last updated: April 1, 2026
This page provides a centralized list of contacts frequently used by ACO students. Because ACO is an interdisciplinary program, students may need to work with ACO, their home unit, and other Georgia Tech offices throughout their program.
Contact information and administrative responsibilities may change over time. For non-ACO contacts, students should refer to their home unit and relevant Georgia Tech office websites for the most up-to-date information. When information on this page conflicts with a home unit or Institute office page, follow the home unit or Institute office page.
Who to Contact for What
| ACO requirements, milestones, transfer credits, general program questions | |
| Comprehensive examination questions | |
| Proposed minor approval | |
| GTA/GRA appointments, payroll, permits, waivers, day-to-day administrative support | Home unit |
| Institute forms, candidacy, thesis/dissertation submission, graduation deadlines | Georgia Tech Graduate Education |
| Course registration, enrollment verification, transcripts | Registrar |
| Visa questions, Social Security Number applications, work permits, international student inquiries | Office of International Education (OIE) |
ACO Program
Website: aco.gatech.edu
ACO Director: Santosh Vempala
Director contact: aco-director@gatech.edu
ACO Associate Directors: Greg Blekherman (Math) and Alejandro Toriello (ISyE)
For questions about ACO requirements, milestones, the comprehensive examination, and general program guidance, students should start with the ACO program. To obtain approval for proposed minor programs, please contact the ACO Program Director, Santosh Vempala.
Home Units
Each ACO student has a home unit in Computer Science, Mathematics, or Industrial and Systems Engineering. Home units handle funding, payroll, permits, waivers, and other local administrative matters.
Computer Science
Website: scs.gatech.edu
Graduate academic/program contact: Academic Program Coordinator II, Tiffany Ntuli (t.ntuli@gatech.edu)
School administrative contact: School Administrative Officer, Kelly Rockwell (krockwell@gatech.edu)
Mathematics
Website: math.gatech.edu
General School of Mathematics inquiries: info@math.gatech.edu
Course inquiries: academics@math.gatech.edu
Graduate studies contact: dgs@math.gatech.edu
ACO Associate Director for Mathematics: Greg Blekherman (greg@math.gatech.edu)
Industrial and Systems Engineering (ISyE)
Website: isye.gatech.edu
Graduate studies contact: graduate.studies@isye.gatech.edu
Graduate academic/program contact: Academic Program Manager II, Amanda Ford (amanda.ford@isye.gatech.edu)
ACO Associate Director for ISyE: Alejandro Toriello (atoriello@isye.gatech.edu)
Georgia Tech Offices
Graduate Education
Website: grad.gatech.edu
General contact: grad.ask@gatech.edu
Graduate Education handles Institute-level academic milestones such as candidacy, thesis/dissertation support, and graduation-related resources.
Registrar
Website: registrar.gatech.edu
General contact: comments@registrar.gatech.edu
Phone: 404-894-4150
The Registrar handles registration, enrollment verification, transcripts, and other academic records services.
Office of International Education (OIE)
Website: oie.gatech.edu
General contact: info@oie.gatech.edu
Phone: 404-894-7475
For international ACO students, OIE is the main office for international student advising, visa compliance, and CPT/OPT questions. To obtain a social security number to work as a GTA/GRA, please coordinate with the OIE and department in charge of offering the classes for the necessary documents.
