Prosecutors say Cynthia Stewart faces a bond hearing Friday before a federal judge in San Antonio.
Stewart has been charged with receipt of child pornography and solicitation of a minor to engage in sexual conduct. She made an initial court appearance Tuesday and did not yet have an attorney.
Stewart, who works at Olympia Elementary School, has been put on paid administrative leave by the Judson Independent School District. The teen not a Judson ISD student.
An affidavit says the woman and the boy apparently became acquainted about two years ago through Facebook. His parents contacted authorities after recently noticing the boy was texting someone at odd hours.