17. The tangible non-transitory computer-readable medium of claim 16 , wherein at least a portion of the computer readable program code is executed on a system comprising: a storage medium configured to store alphabetical test data; and a processor configured to retrieve the alphabetical test data and determine the reading fluency starting age by ranking the reading fluency score versus ages of the population of individuals of different ages contributing the alphabetical test data.
16. A computer readable medium comprising one or more instructions that, when executed by one or more processors, cause the one or more processors to determine a reading fluency starting age by: testing a population of different ages on an alphabetical test comprising reading a sentence; ranking a reading fluency score on the alphabetical test versus ages of the population; and determining the reading fluency starting age as an age at which the reading fluency score on the alphabetical test versus ages of the population shows a maximum.