ICCS 2009 Technical Report - IEA

B.38. Thailand• Special education schools, welfare education schools, and specific purpose schools that arenot under the supervision of the Ministry of Education were excluded at the school level.• Explicit stratification was performed by region (middle, north, north east, south) andschool type (public, private), resulting in eight explicit strata.• Implicit stratification was applied by urbanization (rural, urban), giving a total of 16implicit strata.Table B.38: Allocation of student sample and teacher sample in ThailandSchool Participation Status—Student Survey and Teacher SurveyParticipating SchoolsExplicit Strata Total IneligibleNon-ParticipatingSampled Schools Schools Sampled First Second Schoolsreplacement replacementMiddle—private 7 0 6 1 0 0Middle—public 43 0 33 10 0 0North—private 3 0 2 1 0 0North—public 23 0 21 2 0 0North east—private 2 0 1 1 0 0North east—public 50 0 33 17 0 0South—private 7 0 3 4 0 0South—public 15 1 11 3 0 0Total 150 1 110 39 0 0314 ICCS 2009 technical report