Gary Probst wrote:

Here is a story you can post in your learning lab.

Dear Dad,

  $chool i$ really great. I am making lot$ of friend$ and
  $tudying very hard. With all my $tuff, I $imply can't
  think of anything I need, $o if you would like, you can
  ju$t $end me a card, a$ I would love to hear from you.

  Your $on

  The Reply:
  Dear Son,
  I kNOw that astroNOmy, ecoNOmics, and oceaNOgraphy
  are eNOugh to keep even an hoNOr student busy. Do
  NOt forget that the pursuit of kNOwledge is a NOble
  task, and you can never study eNOugh.