Wiktionary
telpochcalli
n. (context historical English) A school for the children of Aztec commoners.
Wikipedia
Tēlpochcalli
Tēlpochcalli ( Nahuatl: house of the young men), were centers where Aztec youth were educated, from age 15, to serve their community and for war. These youth schools were located in each district or calpulli.