<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1607-4041</journal-id>
<journal-title><![CDATA[Revista electrónica de investigación educativa]]></journal-title>
<abbrev-journal-title><![CDATA[REDIE]]></abbrev-journal-title>
<issn>1607-4041</issn>
<publisher>
<publisher-name><![CDATA[Universidad Autónoma de Baja California, Instituto de Investigación y Desarrollo Educativo]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1607-40412021000100024</article-id>
<article-id pub-id-type="doi">10.24320/redie.2021.23.e24.3540</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[¿Más horas en la escuela incrementan el logro escolar? Evidencia para el nivel secundaria del Programa de Escuelas de Tiempo Completo en México]]></article-title>
<article-title xml:lang="en"><![CDATA[Does Spending Longer at School Increase Educational Attainment? Evidence from the Full-Time School Program in Junior High Schools in Mexico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Santillán Hernández]]></surname>
<given-names><![CDATA[Alma Sofía]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma del Estado de Hidalgo  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<volume>23</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1607-40412021000100024&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1607-40412021000100024&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1607-40412021000100024&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El objetivo de este artículo es presentar evidencia sobre el impacto del Programa de Escuelas de Tiempo Completo de México en el porcentaje de estudiantes de tercer grado de secundaria que son clasificados en los niveles de logro insuficiente y sobresaliente. El impacto se estima utilizando el método de emparejamiento por puntajes de propensión en las escuelas incorporadas por primera vez al programa en el ciclo escolar 2014-2015. El impacto se estima para los años 2015, 2017 y 2019. Los resultados muestran que no hay efecto significativo del programa en el logro escolar en Matemáticas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract This article aims to offer evidence on the impact of Mexico&#8217;s Full-Time School Program (PETC) on the percentage of third-grade junior high school students displaying unsatisfactory or outstanding levels of attainment. This impact was estimated using propensity score matching for schools joining the program for the first time in the 2014-2015 school year. The impact is estimated for 2015, 2017 and 2019.The results show no significant effect from the program on attainment in mathematics; this null effect persists 4 years after the program started.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[política educativa]]></kwd>
<kwd lng="es"><![CDATA[escuelas de tiempo completo]]></kwd>
<kwd lng="es"><![CDATA[rendimiento escolar]]></kwd>
<kwd lng="es"><![CDATA[escuela secundaria]]></kwd>
<kwd lng="en"><![CDATA[educational policy]]></kwd>
<kwd lng="en"><![CDATA[full-time school]]></kwd>
<kwd lng="en"><![CDATA[academic achievement]]></kwd>
<kwd lng="en"><![CDATA[junior high school]]></kwd>
</kwd-group>
</article-meta>
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