The bill requires principals and superintendents to report inappropriate teacher-student relationships or face jail time and fines up to $10,000. The teacher's family could also lose access to the teacher's pension.
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Under the bill, a teacher would automatically lose their license if they have to register as a sex offender. Teachers would also get training on how to properly handle personal boundaries and relationships with students.
The Texas Education Agency in 2016 opened more than 220 investigations that involved in appropriate teacher-student relationships.
Gov. Greg Abbott is expected to sign the measure into law on Thursday.
The Associated Press contributed to this report.
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