Gist
A 14-year-old in Thailand is usually Matthayom 3 (Grade 9). See the direct answer, key exception and records that confirm the correct placement.
A 13-year-old in Thailand is usually Matthayom 2 (Grade 8). See the direct answer, key exception and records that confirm the correct placement.
A 7-year-old in Thailand is usually Prathom 2 (Grade 2). See the direct answer, key exception and records that confirm the correct placement.
A 6-year-old in Thailand is usually Prathom 1 (Grade 1). See the direct answer, key exception and records that confirm the correct placement.
A 5-year-old in Thailand is usually Kindergarten 3 (Anuban 3). See the direct answer, key exception and records that confirm the correct placement.
A 4-year-old in Thailand is usually Kindergarten 2 (Anuban 2). See the direct answer, key exception and records that confirm the correct placement.