Article History
Received: 9 November 2017
Accepted: 11 May 2018
First Online: 1 June 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: The study was approved by the Institutional Review Board at the University of Texas at Austin and have been performed in accordance with the ethical standards established by the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards. For this type of study formal consent is not required.
: This study uses secondary data under license from WestEd. In accordance with Education Code 501938(b), and in accordance with school board policy, passive consent was used for administration of the surveys.