The average height of a 6th grade boy is58 inches with a standard deviation of 2 inches. The averageheight of a 9th grade boy is 65 inches with a standarddeviation of 3 inches.

One may also ask, how tall is an average 12 year old female? A 12 year old boy should be between 4 1/2 and 51/4 feet tall. A 12 year old girl should be between 41/2 and 5 1/3 feet tall.

Besides, how tall is a 11 year old supposed to be?

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Average Height to Weight Ratio for Female Children(2 to 12 Years) 9 yrs 62.0 lb (28.1 kg) 52.5 (133.3 cm) 10 yrs 70.5 lb (31.9 kg) 54.5 (138.4 cm) 11 yrs 81.5 lb (36.9 kg) 56.7 (144 cm) 12 yrs 91.5 lb (41.5 kg) 59.0 (149.8 cm)
How tall is a normal 5th Grader?

-Quora. For males, its 4 foot 10 and for females, its 4 foot8.