By Appointment Only

382 N. Lemon Avenue. Suite 191 
Walnut, CA 91789-2344

Telephone (951) 534-6345
​E-mail: Learn@ATI.School

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If you are reaching out to verify your enrollment transcript, please read the following:

1. Advanced Technical Institute™ is located in Southern California, operates as a private institution, and delivers programs only in the state of California.
2. Advanced Technical Institute™ does not enroll students from the public sector.
3. Advanced Technical Institute™ is often mistaken for Texas and Florida schools with a similar name. Advanced Technical Institute™ is in no way associated with or related to schools in other states.
4. If you attended a training outside the state of California and your course is not listed on our website, we cannot assist in your verification as you are NOT an alumnus of our school.