Somebody asked me for this song tonight, so I thought I'd post the lyrics exactly as they appear in the Sing Out! Reprints booklet (the pink book). I think I prefer the version at the top of this thread, without the whistling.
-Joe Offer-

BLACK AND WHITE
words by Alan Roberts / music by Earl Robinson
(copyright 1956 & 1972, Templeton Publishing Co.)

The ink is black, the page is white,
Together we learn to read and write.
To read and write.
And now a child can understand
This is the law of all the land;
All the land!
The ink is black, the page is white,
Together we learn to read and write;
To read and write.

Their robes were black, their heads were white
The schoolhouse doors were closed so tight;
Were closed up tight.
Nine judges all set down their names
To end the years and years of shame,
Years of shame!
The robes were white, the heads were white
(Whistle tune)

The slate is black, the chalk is white,
The words stand out so clear and bright
So clear and bright.
And now at last we plainly see
The alphabet of liberty,
Liberty!
The slate is black, the chalk is white
Together we learn to read and write,
To read and write.

A child is black, a child is white,
The whole world looks upon the sight,
A beautiful sight.
For very well the whole world knows
This is the way that freedom grows;
Freedom grows!
A child is black, a child is white
The whole world looks upon the sight
(Whistle tune)

The world is black, the world is white,
It turns by day and it turns by night;
It turns by night.
It turns so each and everyone
Can take his station in the sun,
In the sun!
The world is black, the world is white
(Whistle tune)