ts used with <code>studentGrowthPercentiles</code> and <code>studentGrowthProjections</code> must be specifically formatted as <em>wide</em> format files. The first
variable/column is the student ID variable. The next set of columns provide the grade of the student across all the years provided in the dataset (possibly missing).
The last set of columns provide the scales scores of the student in the respective grades. Operational users of this package are advised to use data formatted similar to
the sgpData