Castro tweeted an image of the assignment, which asked students to list both positive and negative aspects to living as a slave.
The charter school where the assignment came from, Great Hearts, has since responded in a statement on Facebook saying that it would conduct an audit of the textbook the assignment at its Monte Vista North campus came from and decide whether or not to use the textbook in the future. The statement also said that the assignment had only been used by one teacher, at one campus:
This is absolutely unacceptable. A @GreatHeartsTX charter school in San Antonio asked students to complete a “balanced view” assignment about slavery, requiring them to list the “positive aspects” of slave life. The teacher worked from a @pearson textbook. pic.twitter.com/mzEWty68tB