Money Exchange - Once that you are here, if you require exchanging us Dollars or Euros, you should go to the bank with a copy of your passport and visa.
You can also change your money at any of the numerous money exchanges located in the México City airport as you exit customs.
Also, ATM machines will give pesos, although there will be a fee charged to your account for use of a foreign ATM machine. In addition, there are several banks and money exchanges located in Cuernavaca and close to the school where you can use ATMs or exchange cash or traveler's checks.
Please note that it is virtually impossible to use personal checks in México.