Since we began home schooling,
I have administered standardized tests
to the children after each school year.
After the first year, we tested in May. But, in years since, we have tested mid-summer ~ and, found it to be much nicer that way. In May, the children and teacher are a little weary. Taking a good, long month of "summer" first, seems to make everyone a little more fresher and ready for a week of testing. :-)
It usually takes about 2 to 2 1/2 hours each day over 3 to 4 days to complete the testing.
And when we are all done, it's fun to do something special at the end of the week! :-)