It is most likely that the scholl is providing the "classroom" hours of training only. As Lawrence said, you must accrue many hours of hand-on experience under the watchful eye of a Level II or Level III.
Check to see if the instructor has been certified by ASNT, not simply certified in accordance with ASNT.
There are three certification schemes used by most commercial laboratories.
1) ASNT SNT-TC-1A is a recommended practice for the qualification and certification of NDE personnel. This is the least restrictive scheme for employer based certification. You must be tested and certified by each employer. The certification is not transferable to another employer. The Level III can be employer certified.
2) ASNT CP-189 is a standard where the minimum requirements must be met in accordance with the document. again, this is an employer based certification. The Level III must be certified by ASNT. The employer must still certify the Level III even though he/she is certified by ASNT.
3) ASNT ACCP - this is a central certification where the Level II and Level III is qualified and certified by ASNT. The employer must still certify the Level II and Level III. The Level III must be certified through ASNT.
4) AWS certifications for MT and PT - individual must pass the certification examinations administered through AWS approved facilities. The candidate must provide objective evidence of the necessary relevant work experience. To my knowledge this program is not yet recognized by other governing bodies.
5) NAVSEA TP271 - individuals must be qualified and certified by the employer in accordance with SNT-TC-1A. The recommendations listed in SNT-TC-1A are considered to be the minimum requirements.
There are others, but these are the one's most frequently encountered. Instruction provided by an individual that is not an ASNT certified Level III may not be acceptable to some programs. The employer's written practice should list the qualifications of the instructors providing classroom training. There are schools out there that sell their training programs, but the instructors are not qualified to provide that training required by the different standards.
Once the classroom training requirements have been met, you need to accrue the necessary relevant hands-on experience under the supervision of a Level II or Level III. My work around was to hire a Level II to witness me performing the work. the Level II had to sign for the work and signed my log book indicating the hours. It took over a year in some cases to accrue the necessary hours.
I am not familiar with BinDT.
Good luck.
Al