In this case, we need to get enough information before we can make a more accurate judgment on the credibility of Tammy's original education painting. We can inspect Tami Education or any other educational institution from the aspects of official certification and qualification, teaching staff, curriculum system, students' evaluation and cases, and audition courses and services:

1. official certification and qualification: check whether the institution is legally registered and whether it has relevant education and training qualifications and licenses.

2. Teachers: Understand the professional background, industry experience and teaching achievements of teachers. Excellent original painting teachers should have rich practical experience and solid teaching ability.

3. Curriculum system: observe whether the curriculum is systematic and comprehensive, whether it keeps up with the development trend of the industry, and whether it meets the needs of learners at different stages.

4. Student evaluation and case analysis: find and read the true evaluation of previous students, and pay attention to the student works and employment situation displayed by this institution.

5. Audition courses and services: If possible, attend free audition courses and experience the teaching quality and teaching environment for yourself.