What do Freire and Gatto agree on?

A lot, I think....

I don't think there would be too much disagreement if any between these two.

Lets begin with the vessel of the student.   Freire says " Narration (with the teacher as the narrator) leads the students to memorize mechanically the narrated content.  Worse yet, it turns them into "containers," into "receptacles" to be "filled" by the teacher  The more completely he fills the receptacles, the better a teacher he is.  The more the receptacles permit themselves to be filled, the better students they are. 
In Gattos writing he talks a lot about boredom and immaturity, about the system purposefully "dumbing down" the  school populace so as to make them more like sheep and less likely to have a mind of their own. 
Freire states " It is not surprising that the "banking" concept of  education regards men as adaptable, manageable beings.  The more students work at storing the deposits entrusted to them, the less they develop the critical consciousness that would result from their intervention in the world.  The more completely they accept the passive role imposed on them the more they tend simply to adapt to the world as it is and to the fragmented view of reality deposited in them."
Gattos says regarding the adaptation of the Prussian educational model " an educational system deliberately designed to produce mediocre intellects, to hamstring the inner life, to deny students appreciable leadership skills, and  to ensure docile and incomplete citizens, - all in order to render the populace "manageable".
Along those same lines, from Freire " The educated man is the adapted man, because he is better "fit" for the world.  Translated into practice, this concept is well suited to the purposes of the oppressors, whose tranquility rests on how well men fit the world the oppressors have created, and how little they question it".
Also in Gattos essay there is a quote by H.L. Mencken that the aim of the public education is not
"to fill the young of the species with knowledge and awaken their intelligence...Nothing could be further from the truth.  The aim...is simply to reduce as many individuals as possible to the same safe level, to breed and train a standardized citizenry, to put down dissent and originality.  That is its aim in the United States... and that is its aim everywhere else.

Both writers vigorously insist that the purpose of the education system is to, in very simple terms, turn us all into mindless consumers who will have little to no free-thought and to insure that we are too stupid to revolt.  That's my overly pessimistic view anyways. 
Both writers do encourage the reader to acknowledge the problem(s) in the US educational system(they do not suggest that this is just a US issue but a universal one) and give hints on how one might challenge and change the system with ones own self and children.