The Internet Application
for Creating Curriculum-Based Assessment Reading Probes
Directions: Type or paste text into the form and submit. In a short time, OKAPI! will return formatted CBA probes or a readability analysis.




Text Size:
Readability Formula :

Text to Be Analyzed: (Submit text samples of up to 200 words)

Additional Options:

Highlight Difficult Words

Show Readability Formula

Show Sentence Boundaries

Colons (
:) As
Sentence Punctuation

'Magic Characters' Guide: (Optional)
  • Place an asterisk (*) in front of any additional word (i.e., first names for Spache, names of persons or places for Dale-Chall) that you would like OKAPI! to accept as an 'easy' word.
  • Place a right-bracket (>) at any point in the text where you would like OKAPI! to force a new paragraph.
  • Place a backslash (\) at the dividing point of any compound sentence that you would like OKAPI! to count as two sentences.
  • Place an underscore ( _ ) in front of any word containing one or more punctuation marks (e.g., Y.W.C.A.) that you would like to prevent OKAPI! from treating as end-of-sentence markers.
Readability Resources: