Taking into account the approximately 4,000 children aged 5 to 15 that are known to be electively home educated would bring the percentage down to 3.6%.
Gan ystyried y tua 4,000 o blant rhwng 5 a 15 oed y gwyddys eu bod yn ddewisol a addysgir gartref yn dod â'r ganran i lawr i 3.6%.