Originally Posted by mnmom23
...in our district there is a huge range in student size in any grade, from kids who are young and big for grade to those who are old and small for grade.

My eldest has skipped two grades. He's taller than average, but not a lot (at the high end of one standard deviation above the mean). He's not the shortest kid in his class, in spite of the fact that some kids are 2.5 years older than him.