I recently came across a site that lists books by reading level.
I put in the titles of K's favorite 2 books & this is what it came up with:

Marvin K Mooney Will You Please Go Now! reading level 1.1 - meaning grade one, first month.  I have been estimating that K is at about a grade one level, so I was pretty pleased with that.

Next, I tried her other favorite - Duck in a Truck -  reading level...............get this!  Grade 2.5 - that's the 5th month of grade 2!

Have I said before that this little girl amazes me?

Here is the site if you would like to see how your little one is doing  but remember, make it fun, no testing right?..............or at least be sneaky about it :)

AR Book Finder