Inadvisable

Whew, just finished another Grade One after school class.
Imagine a class of 17 little grade one kids, who have a vocabulary of about 100 English words.
They've been in school since 7:30 - they'll leave after 10 and 1/2 hours - so they're, shall we say, squirrely.
Now, try, in English, to convince these children to sit in a desk, quietly, without touching anything or talking or moving.
It's like the ultimate challenge. It definitely drives me crazy, but I have not snapped yet. I will not let them crack me! Only twenty some classes to go.