Add auto value for age field

[Rantideb]

Firstly, bro take a high five. I would like to buy a coffee for you.
A #feature request, you may try to add auto value for the age field as it almost strict to have a minimum age to admit in any class. Age will show automatically after selecting class. After then, user may change the value from 0 to 100+ (joking bro)

And, another heads up; bro, school list is not showing correct mostly in Union levels.