EI-CD,
The whole point of the
M-1 Visa is for you to go to the school that is sponsoring you for the Visa.
You could enter the U.S.A. on a
B Visitors Visa and then when you find the school you want, have them change your Immigration Status to an
M-1 Visa. During the time it will take to change you from a
B to an
M-1 you will NOT be allowed to train in any way.
There are more details in this thread:
Visa Requirements for Flying and Training in the U.S.A.
Happy Flying,
Capt. Richard J. Gentil, Pres.
Naples Air Center, Inc.