We are in Scotland where is is normal to hold back children born in Jan and Feb. I didn't hold my Feb born DTS back as they were I felt, in need of the stimulation school would provide and so I sent them aged 4.5 and youngest in the year. Four years on (they have high IQ's) they are top of their class academically, have an IEP for high learning ability, but in some ways socially quite immature and still very fidgety, although getting better every year. I took them for an independent school entrance exam to start this Aug repeating P4 (as I thought standards would be higher and there would be more differentiation) so they wouldn't be the youngest in the year, more advantageous for sport (DH very obsessed by the sport bit) etc.
The school said they would be bored in P4 again and as they don't do an intake in P5 we currently have them down to start P6 next year. DH is now adamant that they should repeat P6 and start the year after as he feels being the youngest is a disadvantage (he was youngest in English system). I'm not sure. Which do you think is the most important - being intellectually challenged or possibly being top of the class without too much effort but being less mature and less able to compete at sports?