Please note that Mommsen uses the AUC chronology (Ab Urbe Condita), i.e. from the founding of the City of Rome. You can use this reference table to have the B.C. dates
From: The History of Rome, by Theodor Mommsen
Translated with the sanction of the author by William Purdie Dickson
As a matter of course, the rod played its part in instruction as well as in military discipline and in police.(28)
28. It is at any rate a true Roman picture, which Plautus (Bacch. 431) produces as a specimen of the good old mode of training children:--
... -ubi revenisses domum,
Cincticulo praecinctus in sella apud magistrum adsideres;
Si, librum cum legeres, unam peccavisses syllabam,
Fieret corium tam maculosum, quam est nutricis pallium-.
The instruction of this epoch cannot however have passed beyond the elementary stage: there was no material shade of difference, in a social respect, between the educated and the non-educated Roman.
Do you see any typos or other mistakes? Please let us know and correct them
Reference address : https://www.ellopos.net/elpenor/rome/2-09-art-science.asp?pg=32